bloodline vs breed line

bloodline and breed line both are nouns.

Word	Noun	Adjective	Verb	Adverb
bloodline	Yes	No	No	No
breed line	Yes	No	No	No

As nouns, breed line is a hyponym of bloodline; that is, breed line is a word with a more specific, narrower meaning than bloodline:

bloodline: the hereditary derivation of an individual
breed line: Breed line is offspring from the mating or breeding of individuals or organisms that are closely related genetically.

Other hyponyms of bloodline include family, family line, folk, kinfolk, kinsfolk, phratry, sept, side.

bloodline (noun)	breed line (noun)
ancestry of a purebred animal	Breed line is offspring from the mating or breeding of individuals or organisms that are closely related genetically.
the hereditary derivation of an individual