lineage vs descent

lineage and descent both are nouns.

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

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

Other hyponyms of lineage include extraction, origin, bloodline, pedigree.

As nouns, lineage and descent are synonyms defined as:

As nouns, lineage and descent are synonyms defined as:

lineage and descent: the kinship relation between an individual and the individual's progenitors

Other synonyms of lineage include filiation, line of descent.

lineage (noun)	descent (noun)
inherited properties shared with others of your bloodline	the act of changing your location in a downward direction
the hereditary derivation of an individual	properties attributable to your ancestry
a rate of payment for written material that is measured according to the number of lines submitted	a movement downward
the number of lines in a piece of printed material	the hereditary derivation of an individual
the kinship relation between an individual and the individual's progenitors	a downward slope or bend
	the kinship relation between an individual and the individual's progenitors