play down vs stress

play down is not a noun while stress is a noun.

Word	Noun	Adjective	Verb	Adverb
play down	No	No	Yes	No
stress	Yes	No	Yes	No

As verbs, stress is a hypernym of play down; that is, stress is a word with a broader meaning than play down:

Other hypernyms of play down include accent, accentuate, emphasise, emphasize, punctuate.

play down (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

play down (verb)	stress (verb)
understate the importance or quality of	to suffer from stress
	to stress, single out as important
	put stress on; utter with an accent
	test the limits of