rustic vs countryman

rustic and countryman both are nouns.

Word	Noun	Adjective	Verb	Adverb
rustic	Yes	Yes	No	No
countryman	Yes	No	No	No

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

rustic (noun)	countryman (noun)
an unsophisticated country person	a man from your own country
	a man who lives in the country and has country ways

rustic (adjective)	countryman (adjective)
awkwardly simple and provincial
characteristic of the fields or country
characteristic of rural life