origin vs stemma

origin and stemma both are nouns.

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

As nouns, origin and stemma are synonyms defined as:

origin (noun)	stemma (noun)
properties attributable to your ancestry	an eye having a single lens
the point of intersection of coordinate axes; where the values of the coordinates are all zero	the hereditary derivation of an individual
an event that is a beginning; a first part or stage of subsequent events	a tree diagram showing a reconstruction of the transmission of manuscripts of a literary work
the hereditary derivation of an individual
the place where something begins, where it springs into being
the source of something's existence or from which it derives or is derived