line drive vs liner

line drive and liner both are nouns.

Word	Noun	Adjective	Verb	Adverb
line drive	Yes	No	No	No
liner	Yes	No	No	No

As nouns, line drive and liner are synonyms defined as:

line drive and liner: (baseball) a hit that flies straight out from the batter

line drive (noun)	liner (noun)
(baseball) a hit that flies straight out from the batter	(baseball) a hit that flies straight out from the batter
	a large commercial ship (especially one that carries passengers on a regular schedule)
	a piece of cloth that is used as the inside surface of a garment
	a protective covering that protects an inside surface