parentage vs stemma

parentage and stemma both are nouns.

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

As nouns, parentage and stemma are synonyms defined as:

Other synonyms of parentage include ancestry, blood, blood line, bloodline, descent, line, line of descent, lineage, origin, pedigree, stock.

parentage (noun)	stemma (noun)
the hereditary derivation of an individual	an eye having a single lens
the kinship relation of an offspring to the parents	the hereditary derivation of an individual
the state of being a parent	a tree diagram showing a reconstruction of the transmission of manuscripts of a literary work