reduce vs reef

reduce is not a noun while reef is a noun.

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

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

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

reduce (noun)	reef (noun)
	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

reduce (verb)	reef (verb)
take off weight	roll up (a portion of a sail) in order to reduce its area
cut down on; make a reduction in	reduce (a sail) by taking in a reef
narrow or limit	lower and bring partially inboard
cook until very little liquid is left
to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons
make smaller
reduce in size; reduce physically
make less complex
reduce in scope while retaining essential elements
lessen the strength or flavor of a solution or mixture
be cooked until very little liquid is left
be the essential element
destress and thus weaken a sound when pronouncing it
undergo meiosis
reposition (a broken bone after surgery) back to its normal site
lower in grade or rank or force somebody into an undignified situation
lessen and make more modest
simplify the form of a mathematical equation of expression by substituting one term for another
bring to humbler or weaker state or condition
put down by force or intimidation