trawl vs trawl line

trawl and trawl line both are nouns.

Word	Noun	Adjective	Verb	Adverb
trawl	Yes	No	Yes	No
trawl line	Yes	No	No	No

As nouns, trawl and trawl line are synonyms defined as:

trawl and trawl line: a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)

Other synonyms of trawl include setline, spiller, trotline.

trawl (noun)	trawl line (noun)
a conical fishnet dragged through the water at great depths	a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)
a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)

trawl (verb)	trawl line (verb)
fish with trawlers