reduce vs crush

reduce is not a noun while crush is a noun.

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

As verbs, crush is a hypernym of reduce; that is, crush is a word with a broader meaning than reduce:

Other hypernyms of reduce include oppress, suppress.

reduce (noun)	crush (noun)
	the act of crushing
	temporary love of an adolescent
	a dense crowd of people
	leather that has had its grain pattern accentuated

reduce (verb)	crush (verb)
take off weight	break into small pieces
cut down on; make a reduction in	become injured, broken, or distorted by pressure
narrow or limit	come out better in a competition, race, or conflict
cook until very little liquid is left	make ineffective
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	to compress with violence, out of natural shape or condition
make smaller	crush or bruise
reduce in size; reduce physically	humiliate or depress completely
make less complex	come down on or keep down by unjust use of one's authority
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