hole vs blowhole

hole and blowhole both are nouns.

Word	Noun	Adjective	Verb	Adverb
hole	Yes	No	Yes	No
blowhole	Yes	No	No	No

As nouns, blowhole is a hyponym of hole; that is, blowhole is a word with a more specific, narrower meaning than hole:

hole (noun)	blowhole (noun)
an opening deliberately made in or through something	a hole for the escape of gas or air
one playing period (from tee to green) on a golf course	the spiracle of a cetacean located far back on the skull
informal terms for the mouth
an opening into or through something
a depression hollowed out of solid matter
an unoccupied space
informal terms for a difficult situation
a fault

hole (verb)	blowhole (verb)
make holes in
hit the ball into the hole