descent vs full blood

descent and full blood both are nouns.

Word	Noun	Adjective	Verb	Adverb
descent	Yes	No	No	No
full blood	Yes	No	No	No

As nouns, full blood is a hyponym of descent; that is, full blood is a word with a more specific, narrower meaning than descent:

Other hyponyms of descent include proletarianism, Polishness.

descent (noun)	full blood (noun)
the act of changing your location in a downward direction	descent from parents both of one pure breed
properties attributable to your ancestry
a movement downward
the hereditary derivation of an individual
a downward slope or bend
the kinship relation between an individual and the individual's progenitors