descent vs parentage

descent and parentage both are nouns.

Word	Noun	Adjective	Verb	Adverb
descent	Yes	No	No	No
parentage	Yes	No	No	No

As nouns, descent and parentage are synonyms defined as:

descent (noun)	parentage (noun)
the act of changing your location in a downward direction	the hereditary derivation of an individual
properties attributable to your ancestry	the kinship relation of an offspring to the parents
a movement downward	the state of being a parent
the hereditary derivation of an individual
a downward slope or bend
the kinship relation between an individual and the individual's progenitors