cards vs ruff

cards and ruff both are nouns.

Word	Noun	Adjective	Verb	Adverb
cards	Yes	No	No	No
ruff	Yes	No	Yes	No

cards (noun)	ruff (noun)
a game played with playing cards	(card games) the act of taking a trick with a trump when unable to follow suit
	common Eurasian sandpiper; the male has an erectile neck ruff in breeding season
	a high tight collar
	an external body part consisting of feathers or hair about the neck of a bird or other animal

cards (verb)	ruff (verb)
	play a trump