col vs wind gap

col and wind gap both are nouns.

Word	Noun	Adjective	Verb	Adverb
col	Yes	No	No	No
wind gap	Yes	No	No	No

As nouns, wind gap is a hyponym of col; that is, wind gap is a word with a more specific, narrower meaning than col:

col: a pass between mountain peaks; geomorphological term for the lowest point on a mountain ridge between two peaks
wind gap: a pass in a mountain ridge with no stream flowing through it

Other hyponyms of col include water gap.

col (noun)	wind gap (noun)
a pass between mountain peaks; geomorphological term for the lowest point on a mountain ridge between two peaks	a pass in a mountain ridge with no stream flowing through it