afflict vs stress

afflict is not a noun while stress is a noun.

Word	Noun	Adjective	Verb	Adverb
afflict	No	No	Yes	No
stress	Yes	No	Yes	No

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

Other hyponyms of afflict include aggrieve, grieve, tribulate, strain, try.

afflict (noun)	stress (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

afflict (verb)	stress (verb)
cause physical pain or suffering in	to suffer from stress
cause great unhappiness for; distress	to stress, single out as important
	put stress on; utter with an accent
	test the limits of