fishing line vs spiller

fishing line and spiller both are nouns.

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

As nouns, spiller is a hyponym of fishing line; that is, spiller is a word with a more specific, narrower meaning than fishing line:

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

Other hyponyms of fishing line include hand line, handline, night-line, setline, trawl, trawl line, trotline, trolling line.

fishing line (noun)	spiller (noun)
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)
	an attacker who sheds or spills blood