pond vs swimming hole

pond and swimming hole both are nouns.

Word	Noun	Adjective	Verb	Adverb
pond	Yes	No	No	No
swimming hole	Yes	No	No	No

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

pond: a small lake
swimming hole: a small body of water (usually in a creek) that is deep enough to use for swimming

Other hyponyms of pond include fishpond, horsepond, mere, millpond, water hole.

pond (noun)	swimming hole (noun)
a small lake	a small body of water (usually in a creek) that is deep enough to use for swimming