roster vs lineup

roster and lineup both are nouns.

Word	Noun	Adjective	Verb	Adverb
roster	Yes	No	No	No
lineup	Yes	No	No	No

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

Other hyponyms of roster include batting order, card, death-roll, muster roll, church roll, rota, waiting list.

roster (noun)	lineup (noun)
a list of names	(baseball) a list of batters in the order in which they will bat
	the schedule of programs for a particular period
	a line of persons arranged by police for inspection or identification