stemma vs folk

stemma and folk both are nouns.

Word	Noun	Adjective	Verb	Adverb
stemma	Yes	No	No	No
folk	Yes	No	No	No

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

Other hyponyms of stemma include family, family line, kinfolk, kinsfolk, phratry, sept, side, breed line.

stemma (noun)	folk (noun)
an eye having a single lens	the traditional and typically anonymous music that is an expression of the life of people in a community
the hereditary derivation of an individual	people in general (often used in the plural)
a tree diagram showing a reconstruction of the transmission of manuscripts of a literary work	a social division of (usually preliterate) people
	people descended from a common ancestor