white man vs squaw man

white man and squaw man both are nouns.

Word	Noun	Adjective	Verb	Adverb
white man	Yes	No	No	No
squaw man	Yes	No	No	No

As nouns, squaw man is a hyponym of white man; that is, squaw man is a word with a more specific, narrower meaning than white man:

white man: a man who is White
squaw man: derogatory term for a white man married to a North American Indian woman

Other hyponyms of white man include good ol' boy, good old boy, good ole boy.

white man (noun)	squaw man (noun)
a man who is White	derogatory term for a white man married to a North American Indian woman