trawl vs fishing line

trawl and fishing line both are nouns.

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

As nouns, fishing line is a hypernym of trawl; that is, fishing line is a word with a broader meaning than trawl:

trawl: a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)
fishing line: a length of cord to which the leader and float and sinker and hook are attached

trawl (noun)	fishing line (noun)
a conical fishnet dragged through the water at great depths	a length of cord to which the leader and float and sinker and hook are attached
a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)

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