dog hook vs cant hook

dog hook and cant hook both are nouns.

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

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

dog hook: 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

dog hook (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