digest vs reduce

digest is a noun but reduce is not a noun.

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

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

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

digest (noun)	reduce (noun)
something that is compiled (as into a single book or file)
a periodical that summarizes the news

digest (verb)	reduce (verb)
make more concise	take off weight
systematize, as by classifying and summarizing	cut down on; make a reduction in
become assimilated into the body	narrow or limit
soften or disintegrate by means of chemical action, heat, or moisture	cook until very little liquid is left
soften or disintegrate, as by undergoing exposure to heat or moisture	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
arrange and integrate in the mind	make smaller
put up with something or somebody unpleasant	reduce in size; reduce physically
convert food into absorbable substances	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