trammel net vs fishnet

trammel net and fishnet both are nouns.

Word	Noun	Adjective	Verb	Adverb
trammel net	Yes	No	No	No
fishnet	Yes	No	No	No

As nouns, fishnet is a hypernym of trammel net; that is, fishnet is a word with a broader meaning than trammel net:

trammel net: a fishing net with three layers; the outer two are coarse mesh and the loose inner layer is fine mesh
fishnet: a net that will enclose fish when it is pulled in

Other hypernyms of trammel net include fishing net.

trammel net (noun)	fishnet (noun)
a fishing net with three layers; the outer two are coarse mesh and the loose inner layer is fine mesh	a net that will enclose fish when it is pulled in