ancestry vs pedigree

ancestry and pedigree both are nouns.

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

As nouns, pedigree is a hyponym of ancestry; that is, pedigree is a word with a more specific, narrower meaning than ancestry:

Other hyponyms of ancestry include descent, extraction, origin, bloodline.

As nouns, ancestry and pedigree are synonyms defined as:

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

ancestry (noun)	pedigree (noun)
inherited properties shared with others of your bloodline	ancestry of a purebred animal
the hereditary derivation of an individual	the hereditary derivation of an individual
	line of descent of a purebred animal

ancestry (adjective)	pedigree (adjective)
	having a list of ancestors as proof of being a purebred animal