thoroughbred vs pureblood

thoroughbred and pureblood both are nouns.

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

As adjectives, thoroughbred and pureblood are synonyms defined as:

thoroughbred and pureblood: having a list of ancestors as proof of being a purebred animal

Other synonyms of thoroughbred include pedigree, pedigreed, pureblooded.

As nouns, thoroughbred and pureblood are synonyms defined as:

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

Other synonyms of thoroughbred include purebred.

thoroughbred (noun)	pureblood (noun)
a pedigreed animal of unmixed lineage; used especially of horses	a pedigreed animal of unmixed lineage; used especially of horses
a racehorse belonging to a breed that originated from a cross between Arabian stallions and English mares
a well-bred person

thoroughbred (adjective)	pureblood (adjective)
having a list of ancestors as proof of being a purebred animal	having a list of ancestors as proof of being a purebred animal