stress vs re-emphasize

stress is a noun but re-emphasize is not a noun.

Word	Noun	Adjective	Verb	Adverb
stress	Yes	No	Yes	No
re-emphasize	No	No	Yes	No

As verbs, re-emphasize is a hyponym of stress; that is, re-emphasize is a word with a more specific, narrower meaning than stress:

stress (noun)	re-emphasize (noun)
the relative prominence of a syllable or musical note (especially with regard to stress or pitch)
(physics) force that produces strain on a physical body
(psychology) a state of mental or emotional strain or suspense
difficulty that causes worry or emotional tension
special emphasis attached to something

stress (verb)	re-emphasize (verb)
to suffer from stress	emphasize anew
to stress, single out as important
put stress on; utter with an accent
test the limits of