shrink vs reef

shrink and reef both are nouns.

Word	Noun	Adjective	Verb	Adverb
shrink	Yes	No	Yes	No
reef	Yes	No	Yes	No

As verbs, reef is a hyponym of shrink; that is, reef is a word with a more specific, narrower meaning than shrink:

Other hyponyms of shrink include reduce, scale down, miniaturise, miniaturize, depopulate, desolate, downsize, contract.

shrink (noun)	reef (noun)
a physician who specializes in psychiatry	one of several strips across a sail that can be taken in or rolled up to lessen the area of the sail that is exposed to the wind
	a submerged ridge of rock or coral near the surface of the water

shrink (verb)	reef (verb)
become smaller or draw together	roll up (a portion of a sail) in order to reduce its area
reduce in size; reduce physically	reduce (a sail) by taking in a reef
wither, as with a loss of moisture	lower and bring partially inboard
decrease in size, range, or extent
draw back, as with fear or pain