hole vs knothole

hole and knothole both are nouns.

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

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

Other hyponyms of hole include aperture, bolt-hole, bullet hole, cranny, leak, ozone hole, perforation, rathole, fuckhole.

hole (noun)	knothole (noun)
an opening deliberately made in or through something	a hole in a board where a knot came out
one playing period (from tee to green) on a golf course
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)	knothole (verb)
make holes in
hit the ball into the hole