batting order vs roster

batting order and roster both are nouns.

Word	Noun	Adjective	Verb	Adverb
batting order	Yes	No	No	No
roster	Yes	No	No	No

As nouns, roster is a hypernym of batting order; that is, roster is a word with a broader meaning than batting order:

batting order: (baseball) a list of batters in the order in which they will bat
roster: a list of names

Other hypernyms of batting order include roll.

batting order (noun)	roster (noun)
(baseball) a list of batters in the order in which they will bat	a list of names