origin vs folk

origin and folk both are nouns.

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

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

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

origin (noun)	folk (noun)
properties attributable to your ancestry	the traditional and typically anonymous music that is an expression of the life of people in a community
the point of intersection of coordinate axes; where the values of the coordinates are all zero	people in general (often used in the plural)
an event that is a beginning; a first part or stage of subsequent events	a social division of (usually preliterate) people
the hereditary derivation of an individual	people descended from a common ancestor
the place where something begins, where it springs into being
the source of something's existence or from which it derives or is derived