old man vs cant

old man and cant both are nouns.

Word	Noun	Adjective	Verb	Adverb
old man	Yes	No	No	No
cant	Yes	No	Yes	No

old man (noun)	cant (noun)
an informal term for your father	two surfaces meeting at an angle different from 90 degrees
a man who is very old	a characteristic language of a particular group (as among thieves)
a familiar term of address for a man	stock phrases that have become nonsense through endless repetition
(slang) boss	insincere talk about religion or morals
aromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe	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

old man (verb)	cant (verb)
	heel over