fishing net vs seine

fishing net and seine both are nouns.

Word	Noun	Adjective	Verb	Adverb
fishing net	Yes	No	No	No
seine	Yes	No	Yes	No

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

fishing net: a net that will enclose fish when it is pulled in
seine: a large fishnet that hangs vertically, with floats at the top and weights at the bottom

Other hyponyms of fishing net include drift net, gill net, landing net, trammel, trammel net, dragnet, trawl, trawl net.

fishing net (noun)	seine (noun)
a net that will enclose fish when it is pulled in	a large fishnet that hangs vertically, with floats at the top and weights at the bottom

fishing net (verb)	seine (verb)
	fish with a seine; catch fish with a seine