cant dog vs cant hook

cant dog and cant hook both are nouns.

Word	Noun	Adjective	Verb	Adverb
cant dog	Yes	No	No	No
cant hook	Yes	No	No	No

As nouns, cant hook is a hyponym of cant dog; that is, cant hook is a word with a more specific, narrower meaning than cant dog:

cant dog: a stout lever with a sharp spike; used for handling logs
cant hook: a peavey having a hook instead of a spike; used for handling logs

cant dog (noun)	cant hook (noun)
a stout lever with a sharp spike; used for handling logs	a peavey having a hook instead of a spike; used for handling logs