What's the difference between commentary and gemara?

Commentary

Definition:

(v. i.) A series of comments or annotations; esp., a book of explanations or expositions on the whole or a part of the Scriptures or of some other work.
(v. i.) A brief account of transactions or events written hastily, as if for a memorandum; -- usually in the plural; as, Caesar's Commentaries on the Gallic War.

Example Sentences:

(1) It also devalues the courage of real whistleblowers who have used proper channels to hold our government accountable.” McCain added: “It is a sad, yet perhaps fitting commentary on President Obama’s failed national security policies that he would commute the sentence of an individual that endangered the lives of American troops, diplomats, and intelligence sources by leaking hundreds of thousands of sensitive government documents to WikiLeaks, a virulently anti-American organisation that was a tool of Russia’s recent interference in our elections.” WikiLeaks last year published emails hacked from the accounts of the Democratic National Committee and John Podesta, chairman of Hillary Clinton’s election campaign.
(2) A team of 16 guides has been hired and trained to give a running commentary on their every move.
(3) This investigation presents a commentary about two researches locating the terminal hing axis (THA) in totally edentulous people determined through the guided and not guided methods with chin compression.
(4) Every story evolves with the speed of fact, not commentary or speculation.” In the case of MH17, Storyful published a blog outlining the key steps it took in verifying the information it gathered from social media, including searching through Twitter posts associated with the Donetsk People’s Republic – many of them since deleted – looking for historical references to surface-to-air missile systems, geolocating YouTube videos purporting to show the missile system in eastern Ukraine prior to the crash and verifying videos from the crash site.
(5) The use of phenylpropanolamine (PPA) as an anorectic has provoked commentary and disagreement.
(6) In 2 commentaries on the theorists' answers, Hinde highlights differences among their positions and indicates issues that current theories of temperament must take into consideration, and McCall draws on common aspects to propose a synthesizing definition that draws on all 4 approaches.
(7) Updated at 7.54pm GMT 7.34pm GMT The Guardian’s Alan Yuhas has a roundup of recommended commentary and analysis on the situation in Ukraine.
(8) "I am not going to give a running commentary on different people's tax affairs.
(9) Comment is perfectly legitimate, but the sneering, supercilious, specious and dismissive contributions masquerading as ‘commentary’ belittle the claims of a ‘quality’ paper.” Before attempting to assess the validity of the reader’s analysis – broadly shared by some other readers – I think his email reflects one or two other interesting aspects of the demographics of the Guardian’s readership and the left.
(10) As the Nuffield Trust remarked in its commentary, this effectively gives the secretary of state "the ability to undertake large-scale reconfiguration".
(11) In this second article in the twice-yearly Aids Commentary series the author describes how to diagnose this new condition, and the treatments that are available.
(12) Since his death on 21 April 1910, Twain's writings have reportedly inspired more commentary than those of any other American author and have been translated into at least 72 languages.
(13) What the results do contain is further and clearer guidance and commentary.
(14) Experience with specific injuries is reviewed with commentary on surgical access to difficult areas including the thoracic outlet, suprarenal aorta and inferior vena cava.
(15) The commentary acknowledges the value of the American-designed peer counseling and leadership training and suggests that international (PCLT) program implementation might be considered.
(16) ITV's coverage of the FA Cup later this month, for example, will hear fans' views of the game and armchair commentaries via AudioBoo on their mobile phones.
(17) Merkel avoided any direct response to the Abbott remarks, but in general commentary about the current flow of refugees, she said right now, the narrow sea lane between Turkey and Greece was under the control of smugglers and traffickers, and this was “unacceptable”.
(18) Premier League referee Mark Halsey will join in a "brand new role" in the commentary team working across all of BT's football coverage.
(19) I think it was just excited commentary, and it sounds like people are trying to get a lot out the door in terms of Christmas purchases of books.” On Monday morning, Morrison insisted the phone call was of “no consequence” and that linking it with the September spill amounted to “tin foil hat conspiracies”.
(20) Commentary and update: X-ray diagnosis, gastric analysis, and endoscopic biopsy cytology; dietary therapy, antacids, and anticholinergics.