hand line vs fishing line

hand line and fishing line both are nouns.

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

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

hand line: a fishing line managed principally by hand
fishing line: a length of cord to which the leader and float and sinker and hook are attached

hand line (noun)	fishing line (noun)
a fishing line managed principally by hand	a length of cord to which the leader and float and sinker and hook are attached