ancestry vs parentage

ancestry and parentage both are nouns.

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

As nouns, ancestry and parentage are synonyms defined as:

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

ancestry (noun)	parentage (noun)
inherited properties shared with others of your bloodline	the hereditary derivation of an individual
the hereditary derivation of an individual	the kinship relation of an offspring to the parents
	the state of being a parent