What's the difference between appear and happen?

Appear


Definition:

  • (v. i.) To come or be in sight; to be in view; to become visible.
  • (v. i.) To come before the public; as, a great writer appeared at that time.
  • (v. i.) To stand in presence of some authority, tribunal, or superior person, to answer a charge, plead a cause, or the like; to present one's self as a party or advocate before a court, or as a person to be tried.
  • (v. i.) To become visible to the apprehension of the mind; to be known as a subject of observation or comprehension, or as a thing proved; to be obvious or manifest.
  • (v. i.) To seem; to have a certain semblance; to look.
  • (n.) Appearance.

Example Sentences:

  • (1) A spindle cell sarcoma appeared 20 months after implantation of a pellet of 3-methylcholanthrene in the denervated foreleg of an adult frog, Rana pipiens.
  • (2) However, as other patients who lived at the periphery of the Valserine valley do not appear to be related to any patients living in the valley, and because there has been considerable immigration into the valley, a number of hypotheses to explain the distribution of the disease in the region remain possible.
  • (3) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
  • (4) 5-HT thus appears to be the preferred substrate for uptake into platelets and for movement from cytoplasm to vesicles.
  • (5) CT appears to yield important diagnostic contribution to preoperative staging.
  • (6) Disease stabilisation was associated with prolonged periods of comparatively high plasma levels of drug, which appeared to be determined primarily by reduced drug clearance.
  • (7) The rash presented either as a pityriasis rosea-like picture which appeared about three to six months after the onset of treatment in patients taking low doses, or alternatively, as lichenoid plaques which appeared three to six months after commencement of medication in patients taking high doses.
  • (8) The angiographic appearances are highly characteristic and equal in value to a histological diagnosis.
  • (9) Slager’s next court appearance is not until 21 August.
  • (10) Cellulase regulation appears to depend upon a complex relationship involving catabolite repression, inhibition, and induction.
  • (11) The process of sequence rearrangement appears to be a significant part of the evolution of the genome and may have a much greater effect on the evolution of the phenotype than sequence alteration by base substitution.
  • (12) In Patient 2 they were at first paroxysmal and unformed, with more prolonged metamorphopsia; later there appeared to be palinoptic formed images, possibly postictal in nature.
  • (13) In dogs, cibenzoline given i.v., had no effects on the slow response systems, probably because of sympathetic nervous system intervention since the class 4 effects of cibenzoline appeared after beta-adrenoceptor blockade.
  • (14) The various evocational changes appear to form sets of interconnected systems and this complex network seems to embody some plasticity since it has been possible to suppress experimentally some of the most universal evocational events or alter their temporal order without impairing evocation itself.
  • (15) Experience of pain is modified by intern and extern influences, and it can appear very multiformly in the chronicity.
  • (16) Coronary arteritis has to be considered as a possible etiology of ischemic symptoms also in subjects who appear affected by typical atherosclerotic ischemic heart disease.
  • (17) A total of 13 ascertainments of folate sensitive autosomal fragile sites is observed, of which 10q23 fragility appears to be the most frequent.
  • (18) However, some contactless transactions are processed offline so may not appear on a customer’s account until after the block has been applied.” It says payments that had been made offline on the day of cancellation may be applied to accounts and would be refunded when the customer identified them; payments made on days after the cancellation will not be taken from an account.
  • (19) Sample processing appears effective in avoiding spontaneous oxalogenesis.
  • (20) The epididymis appeared distended but without any visible sperms.

Happen


Definition:

  • (v. i.) To come by chance; to come without previous expectation; to fall out.
  • (v. i.) To take place; to occur.

Example Sentences:

  • (1) He is also the foremost theorist of the Tijuana-San Diego border in terms of what happens when the urban culture of the developing world collides with that of the developed world.
  • (2) Would people feel differently about it if, for instance, it happened on Boxing Day or Christmas Eve?
  • (3) "At the same time, however, we cannot allow one man's untrue version of what happened to stand unchallenged," he said.
  • (4) I think part of it is you can either go places where that's bound to happen.
  • (5) These results do not support the view that in the rat pheromones from adult males enhance puberty in females, contrary to what is known to happen in the mouse.
  • (6) The only way we can change it, is if we get people to look in and understand what is happening.” Facebook Twitter Pinterest Dean, Clare and their baby son.
  • (7) That is what needs to happen for this company, which started out as a rebellious presence in the business, determined to get credit for its creative visionaries.
  • (8) "David Cameron has lost control of what's happening in the NHS.
  • (9) The small print revealed that Osborne claimed a fall in borrowing largely by factoring in the proceeds of a 4G telecomms auction that has not yet happened.
  • (10) She was clearly elected on a pledge not to cut school funding and that’s exactly what is happening,” Corbyn said.
  • (11) Urban hives boom could be 'bad for bees' What happened: Two professors from a University of Sussex laboratory are urging wannabe-urban beekeepers to consider planting more flowers instead of taking up the increasingly popular hobby.
  • (12) It happens to anyone and everyone and this has been an 11-year battle.” Emergency services were called to the oval about 6.30pm to treat Luke for head injuries, but were unable to revive him.
  • (13) One might expect that a similar news spike and rebounding of support for stricter gun control can happen, given President Obama's new push.
  • (14) At present, fewer than 20% do so, with more than half of all deaths happening in hospital and the rest in hospices or care homes.
  • (15) It mostly happens to strong men whose biceps muscle are contracted and overstretched unexpectedly.
  • (16) However, I’m behaving as if it’s all going to happen as planned.” It has certainly been a long road to production.
  • (17) There is no evidence to support the move to seven-day services, there is no evidence of what is going to happen if we divert our resources away from the week to weekends.
  • (18) Some factors of resistance (such as side benefits) happen in reactive and neurotic depressions and are independent of the pharmacological action.
  • (19) It is important for this commission to get to the truth of what happened and it's able to carry on without interference and disruption.
  • (20) And would all Labour cabinet ministers be as willing to work closely with Lib Dem ministers of state, as happens now, though with some spiky exceptions?