bloodline vs stemma

bloodline and stemma both are nouns.

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

As nouns, bloodline and stemma are synonyms defined as:

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

bloodline (noun)	stemma (noun)
ancestry of a purebred animal	an eye having a single lens
the hereditary derivation of an individual	the hereditary derivation of an individual
	a tree diagram showing a reconstruction of the transmission of manuscripts of a literary work