concentrate vs reduce

concentrate is a noun but reduce is not a noun.

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

As verbs, concentrate and reduce are synonyms defined as:

Other synonyms of concentrate include boil down.

As verbs, concentrate and reduce are synonyms defined as:

Other synonyms of concentrate include boil down, decoct.

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

Other hypernyms of concentrate include abbreviate, abridge, contract, cut, foreshorten, shorten.

concentrate (noun)	reduce (noun)
a concentrated example of something
a concentrated form of a foodstuff; the bulk is reduced by removing water
the desired mineral that is left after impurities have been removed from mined ore

concentrate (verb)	reduce (verb)
cook until very little liquid is left	take off weight
make denser, stronger, or purer	cut down on; make a reduction in
make central	narrow or limit
be cooked until very little liquid is left	cook until very little liquid is left
make more concise	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
compress or concentrate	make smaller
direct one's attention on something	reduce in size; reduce physically
draw together or meet in one common center	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