produce vs work up

produce is a noun but work up is not a noun.

Word	Noun	Adjective	Verb	Adverb
produce	Yes	No	Yes	No
work up	No	No	Yes	No

As verbs, work up is a hyponym of produce; that is, work up is a word with a more specific, narrower meaning than produce:

produce: come to have or undergo a change of (physical features and attributes)
work up: develop

Other hyponyms of produce include feather, fledge, regrow, spring, sprout, stock, stool, tiller, leaf, pod, teethe, pupate, get up, cut.

produce (noun)	work up (noun)
fresh fruits and vegetable grown for the market

produce (verb)	work up (verb)
come to have or undergo a change of (physical features and attributes)	develop
create or manufacture a man-made product	form or accumulate steadily
bring forth or yield	come up with
cause to happen, occur or exist	bolster or strengthen
cultivate by growing, often involving improvements by means of agricultural techniques
bring onto the market or release
bring out for display