What's the difference between infrequent and rare?

Infrequent


Definition:

  • (a.) Seldom happening or occurring; rare; uncommon; unusual.

Example Sentences:

  • (1) Surgical repair of the rheumatologic should however, is performed rarely, and should be reserved for the infrequent cases that do not respond to medical therapy.
  • (2) Despite of the increasing diagnostic importance of the direct determination of the parathormone which is at first available only in special institutions in these cases methodical problems play a less important part than the still not infrequent appearing misunderstanding of the adequate basic disease.
  • (3) Significant side-effects occurred infrequently and only 2 children lost weight during the period of medication.
  • (4) At 7 days axonal swellings were infrequently observed and the main structural feature was a reduction in myelin thickness in affected nerve fibers.
  • (5) In view of its infrequent and vague presentation, care is required to avoid overlooking the diagnosis of abdominal tuberculosis, particularly in the immigrant population.
  • (6) Allelic complementation was not observed, despite testing of a large number of allele pairs, and alleles suppressible by the ochre suppressor SUP11 were absent from a sample of 48 spontaneous mutants and occurred infrequently (7%) among a sample of ultraviolet-induced mutants.
  • (7) Social isolation, characterized by extremely infrequent contacts with other people, affects approximately one out of ten elderly people.
  • (8) This device is a possible improvement in the treatment of infants needing long term venous access, although doctors should be aware of the infrequent complications.
  • (9) This has been infrequently reported to occur during general anesthesia and to cause respiratory embarrassment, representing a significant hazard.
  • (10) Although runaway is infrequent with current generation pacemakers, it should be considered in addition to the more common causes of pacemaker malfunction in the patient with appropriate symptoms.
  • (11) Unequivocal interstitial deposits were infrequent and IgM was present in blood vessels in one patient only.
  • (12) In contrast, control Y79 cells not exposed to medium conditioned by RPE cells exhibit only infrequent neuronal phenotypes.
  • (13) In a series of over 200 patients, raised values were found frequently in hepatobiliary disease and infrequently in bone disease.
  • (14) Further, from the plateau values of the ratios, it follows that the substrates dissociate very infrequently from the ternary complex and that at a low substrate concentration 72% of the reaction follows the pathway in which ATP adds first to the enzyme.
  • (15) We conclude that this neuropathy, which is quite different from the infrequent peripheral nerve syndromes previously described in this illness, is commonly present in late Lyme disease.
  • (16) Biopsy of lymph nodes or brain and serologic tests needed for definitive diagnosis were done infrequently.
  • (17) Hematological side effects of neuroleptic drugs occur infrequently but remain a potential cause of serious toxicity.
  • (18) Four peaks (I, II, III, V) were present in all recordings, and a fifth (IV) was present infrequently.
  • (19) The gonadotrophin response to oestrogen levels was temporarily or permanently disordered in all but 3 patients in this series, whereas an ovarian refractoriness to gonadotrophins was only infrequently observed.
  • (20) Interhemispheric subdural hematoma (ISDH), although not infrequent in children, has been rarely encountered in adults.

Rare


Definition:

  • (a.) Early.
  • (superl.) Nearly raw; partially cooked; not thoroughly cooked; underdone; as, rare beef or mutton.
  • (superl.) Not frequent; seldom met with or occurring; unusual; as, a rare event.
  • (superl.) Of an uncommon nature; unusually excellent; valuable to a degree seldom found.
  • (superl.) Thinly scattered; dispersed.
  • (superl.) Characterized by wide separation of parts; of loose texture; not thick or dense; thin; as, a rare atmosphere at high elevations.

Example Sentences:

  • (1) Guillain BarrĂ© syndrome following herpes zoster is rare and only 25 cases have been reported to date.
  • (2) Hypothyroidism complicated by spontaneous hyperthyroidism is an interesting but rare occurrence in the spectrum of autoimmune thyroid disorders.
  • (3) Oculomotor paresis with cyclic spasms is a rare syndrome, usually noticeable at birth or developing during the first year of life.
  • (4) The frequency of rare fragile sites was studied among 240 children in special schools for subnormal intelligence (IQ 52-85).
  • (5) Surgical repair of the rheumatologic should however, is performed rarely, and should be reserved for the infrequent cases that do not respond to medical therapy.
  • (6) Cor triatriatum (CT) is a rare congenital defect, surgically correctable, and sometimes difficult to diagnose by cardiac catheterization.
  • (7) During this period he developed autoimmune haemolytic anaemia, a rare complication of myelofibrosis.
  • (8) One rare case of blind-ending branch originating in the upper third of the ureter are described.
  • (9) This analysis demonstrated that more than 75% of cosmids containing a rare restriction site also contained a second rare restriction site, suggesting a high degree of CpG-rich restriction site clustering.
  • (10) These are rare tumours comparable to abdominal desmoid tumours.
  • (11) They can rarely be detected spontaneously but most often are provoked.
  • (12) A rare case of an extradural brucellosis granuloma in the thoracic region is presented.
  • (13) Massive osteoplastic bone tumor in hepatocellular carcinoma is very rare.
  • (14) Aneurysmal bone cyst is an uncommon benign lesion that rarely presents in the craniofacial region.
  • (15) Axons emerge from proximal dendrites within 50 microns of the soma, and more rarely from the soma, in a tapering initial segment, commonly interrupted by one or two large swellings.
  • (16) Useful studies on the relationship between these acute lesions and peptic ulceration are rare.
  • (17) calcium tung-state, rare-earths compounds, double halogenides.
  • (18) Spontaneous reports of suspected adverse reactions may be the only way of revealing very rare events but they present great difficulties of rational interpretation.
  • (19) Metastatic tumors of the small bowel from extra-abdominal sites are rare.
  • (20) Perinephric abscess is a rare condition; it may be acute, but can take a chronic and atypical course as a result of incomplete treatment with antibiotics.