liner vs cargo liner

liner and cargo liner both are nouns.

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

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

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

Other hyponyms of liner include cabin liner, cruise liner, cruise ship, express luxury liner, luxury liner.

liner (noun)	cargo liner (noun)
(baseball) a hit that flies straight out from the batter	a liner that carries cargo
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