pureblood vs purebred

pureblood and purebred both are nouns.

Word	Noun	Adjective	Verb	Adverb
pureblood	Yes	Yes	No	No
purebred	Yes	Yes	No	No

As nouns, pureblood and purebred are synonyms defined as:

pureblood and purebred: a pedigreed animal of unmixed lineage; used especially of horses

Other synonyms of pureblood include thoroughbred.

pureblood (noun)	purebred (noun)
a pedigreed animal of unmixed lineage; used especially of horses	a pedigreed animal of unmixed lineage; used especially of horses

pureblood (adjective)	purebred (adjective)
having a list of ancestors as proof of being a purebred animal	bred for many generations from member of a recognized breed or strain