people vs countryfolk

people and countryfolk both are nouns.

Word	Noun	Adjective	Verb	Adverb
people	Yes	No	Yes	No
countryfolk	Yes	No	No	No

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

Other hyponyms of people include country people, Achaean, Arcado-Cyprians, Aeolian, Dorian, Ionian, electorate, governed.

people (noun)	countryfolk (noun)
(plural) any group of human beings (men or women or children) collectively	people raised in or living in a rural environment; rustics
the body of citizens of a state or country	people living in the same country; compatriots
members of a family line
the common people generally

people (verb)	countryfolk (verb)
fill with people
furnish with people