airhead vs cant

airhead and cant both are nouns.

Word	Noun	Adjective	Verb	Adverb
airhead	Yes	No	No	No
cant	Yes	No	Yes	No

airhead (noun)	cant (noun)
a bridgehead seized by airborne troops	two surfaces meeting at an angle different from 90 degrees
a flighty scatterbrained simpleton	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

airhead (verb)	cant (verb)
	heel over