liner vs ocean liner

liner and ocean liner both are nouns.

Word	Noun	Adjective	Verb	Adverb
liner	Yes	No	No	No
ocean liner	Yes	No	No	No

As nouns, liner and ocean liner are synonyms defined as:

liner and ocean liner: a large commercial ship (especially one that carries passengers on a regular schedule)

liner (noun)	ocean liner (noun)
(baseball) a hit that flies straight out from the batter	a large commercial ship (especially one that carries passengers on a regular schedule)
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