blood line vs pedigree

blood line and pedigree both are nouns.

Word	Noun	Adjective	Verb	Adverb
blood line	Yes	No	No	No
pedigree	Yes	Yes	No	No

As nouns, blood line and pedigree are synonyms defined as:

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

blood line (noun)	pedigree (noun)
the hereditary derivation of an individual	ancestry of a purebred animal
	the hereditary derivation of an individual
	line of descent of a purebred animal

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