cowpoke vs cowman

cowpoke and cowman both are nouns.

Word	Noun	Adjective	Verb	Adverb
cowpoke	Yes	No	No	No
cowman	Yes	No	No	No

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

cowpoke: a hired hand who tends cattle and performs other duties on horseback
cowman: a male hired hand who tends cattle and performs other duties on horseback

Other hyponyms of cowpoke include buckaroo, buckeroo, vaquero, cowgirl, gaucho, horse wrangler, wrangler, roper, cattleman, cowboy.

cowpoke (noun)	cowman (noun)
a hired hand who tends cattle and performs other duties on horseback	a male hired hand who tends cattle and performs other duties on horseback