country people vs folk

country people and folk both are nouns.

Word	Noun	Adjective	Verb	Adverb
country people	Yes	No	No	No
folk	Yes	No	No	No

As nouns, folk is a hypernym of country people; that is, folk is a word with a broader meaning than country people:

Other hypernyms of country people include common people, folks.

country people (noun)	folk (noun)
people raised in or living in a rural environment; rustics	the traditional and typically anonymous music that is an expression of the life of people in a community
people living in the same country; compatriots	people in general (often used in the plural)
	a social division of (usually preliterate) people
	people descended from a common ancestor