ancestry vs filiation

ancestry and filiation both are nouns.

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

As nouns, ancestry and filiation are synonyms defined as:

ancestry and filiation: inherited properties shared with others of your bloodline

Other synonyms of ancestry include derivation, lineage.

ancestry (noun)	filiation (noun)
inherited properties shared with others of your bloodline	inherited properties shared with others of your bloodline
the hereditary derivation of an individual	the kinship relation between an individual and the individual's progenitors