What's the difference between cornerstone and keystone?

Cornerstone


Definition:

Example Sentences:

  • (1) Antimicrobiologic chemotherapy is a cornerstone in the modern concept of treatment of sepsis.
  • (2) Many of the plays we produced needed time for research and development in workshop mode – this investment, the provision of time for the development and rehearsal of plays for which I have campaigned throughout my career, was a cornerstone of our work, and could not be stripped away without imperilling the creation of plays themselves.
  • (3) The chancellor's position was not helped by the centre right Centre for Policy Studies which argued in a pamphlet on Monday that he would struggle to meet his deficit reduction plan, the cornerstone of the government's economic strategy.
  • (4) The Lib Dem leader, Tim Farron, who has said the passage of the bill in the autumn will be “hell” for the government, said: “The charter of fundamental rights is a cornerstone of what makes Britain what we are.
  • (5) A "cornerstone" of the legal system, the universal right to a solicitor upon arrest, could be jettisoned in favour of means-testing under controversial plans drawn up by the Ministry of Justice.
  • (6) But there, stuck behind a glass case in the Museum of Modern Art in New York, and having already failed to take off from the shelves of department stores in the United States, Richard Joseph saw what was to become the cornerstone of a new family venture – a chopping board.
  • (7) Adequate tissue oxygenation is the cornerstone of therapy.
  • (8) Conventional diets and increased exercise are the cornerstones of traditional therapy for obesity, but available data suggest that the most important component of any program is the associated behavior modification through which new ways of dealing with old problems can be learned and continually applied.
  • (9) Liberal irrigation and elevation of the injured part are also cornerstones of therapy.
  • (10) If there’s one thing Apple told investors clearly, it’s that the iPhone is still the cornerstone to the success of the Apple Empire.
  • (11) She sees the character as "tough, intelligent, delightfully daffy and yet a moral cornerstone for a lot of deviant behaviour".
  • (12) The fear is palpable in this place.” A cornerstone of the reforms is a restructuring around more than a dozen thematic “global practices” like health or trade, instead of regional teams.
  • (13) Continuous improvement is a cornerstone to this new look at quality.
  • (14) Minister Stan Smith said members of the Cornerstone Community Church congregation were offering to mourn with people who were heartbroken by the news of Henning's death.
  • (15) Computed tomography is recommended as the cornerstone in the initial radiographic evaluation of growing or painful lipomatous soft tissue masses of the extremities.
  • (16) Conservative treatment is the cornerstone of management and is effective in more than two-thirds of patients, making surgical treatment necessary in only a minority of instances.
  • (17) From analyses of the effectiveness of beta-blocker monotherapy in relation to the patient's age and to pre-treatment renin determinations an antihypertensive drug program is proposed in which beta-blockers form the cornerstone.
  • (18) Dutton is furious that Triggs linked their deaths to the Coalition’s boat turnback measure, a cornerstone of its hardline Operation Sovereign Borders policy.
  • (19) The prevention of the occurrence and recurrence of PCP is a cornerstone in the treatment of patients infected with the human immunodeficiency virus.
  • (20) Cornerstones of these development are the foundation of the Society for Medical Radiology in 1954, the continuous increase of the numbers of examinations until 1974, the significantly increased availability of modern imaging methods since 1985 and the introduction of special training courses for physicians in the fields of diagnostic radiology, radiation therapy and nuclear medicine in 1988.

Keystone


Definition:

  • (n.) The central or topmost stone of an arch. This in some styles is made different in size from the other voussoirs, or projects, or is decorated with carving. See Illust. of Arch.

Example Sentences:

  • (1) If these is the case the Ir gene (genes) would be the Keystone for maintaining the preferential associations of some pseudoalleles in some haplotypes.
  • (2) Oil carried by Keystone will displace heavy crude from Venezuela, Nigeria and other countries that also contribute to global warming, Pourbaix said.
  • (3) The bill, voted through a panel of the house energy and power subcommittee, would compel Obama to over-rule demands for a further review of the project from the Environmental Protection Agency (EPA), and disregard local opposition to the Keystone XL pipeline from landowners along its 1,700-mile route.
  • (4) But two key Liberal positions, on the Keystone XL and on emissions reductions targets, put Trudeau out of step with Obama, who has made climate change the signature issue of his second term in the White House.
  • (5) Former hedge fund manager Tom Steyer took out television ads on Tuesday, the night of Obama's state of the union address , attacking Keystone XL, and other wealthy Democratic donors wrote open letters to the White House seeking to shut down the project.
  • (6) Now that the State Department has just released a final environmental impact report on Keystone XL, which appears to downplay the threat, and greatly increases the odds that the Obama administration will approve the project, I feel I must weigh in once again.
  • (7) Environmental activists opposed to the Keystone XL tar sands pipeline project protest outside the White House in Washington.
  • (8) On the campaign trail, however, Clinton had claimed it would be inappropriate to express her views on Keystone given her recent service in Barack Obama’s administration.
  • (9) The system should include two prehospital and two hospital levels, and the highest level being the keystone of the whole.
  • (10) A Nebraska court has signed off on the proposed route for the Keystone XL, bringing the controversial project a crucial step closer to reality after six years of legal and political fighting.
  • (11) The choice President Obama has faced in recent weeks – whether to approve the Keystone XL pipeline – has been framed as a choice between losing the support of environmentalists or alienating America's key ally, Canada.
  • (12) The company behind the Keystone XL pipeline has asked for its US permit application to be put on hold – a move that would leave the final decision on the controversial tar sands oil project to Barack Obama’s successor.
  • (13) What makes the Keystone XL pipeline different is the scale – and politics.
  • (14) One way TransCanada might get around what Clinton called the Keystone “distraction” and pump more tar sands crude into the US might be the Upland pipeline, which the Natural Resources Defense Council (NRDC) has termed a “mini Keystone” .
  • (15) The virions of CE group viruses (CE, Jamestown Canyon, Keystone, LAC, Melao, SSH, TVT, TAH viruses and South River, an unregistered virus) have three major viral polypeptides, designated G1, G2, and N.
  • (16) And we saw the Assad regime as the keystone in that arc.
  • (17) We look forward to the debate and ultimately a decision by the US administration to build Keystone XL,” the company said in a statement.
  • (18) Greenpeace UK energy campaigner Louise Hutchins said: “The pledge to end dirty coal that David Cameron seems to have casually dropped from his summit speech wasn’t just a footnote but the keystone of any serious policy to clean up Britain’s energy system.
  • (19) Also speaking at the fossil fuel conference in Houston, ExxonMobil chairman and chief executive Rex Tillerson called for the exploitation of Arctic oil and gas reserves and the building of the Keystone XL pipeline to bring oil from Canada’s tar sands to the US.
  • (20) This is absolutely not in our national interest.” The campaign against Keystone XL has become a national movement over the last three years, with environmental activists, Nebraska landowners and hedge fund managers all coming out against the project.