drop-dead vs cant

drop-dead is not a noun while cant is a noun.

Word	Noun	Adjective	Verb	Adverb
drop-dead	No	No	No	Yes
cant	Yes	No	Yes	No

drop-dead (noun)	cant (noun)
	two surfaces meeting at an angle different from 90 degrees
	a characteristic language of a particular group (as among thieves)
	stock phrases that have become nonsense through endless repetition
	insincere talk about religion or morals
	a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force

drop-dead (verb)	cant (verb)
	heel over

drop-dead (adverb)	cant (adverb)
stunningly or breathtakingly