fishnet vs trammel

fishnet and trammel both are nouns.

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

As nouns, trammel is a hyponym of fishnet; that is, trammel is a word with a more specific, narrower meaning than fishnet:

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

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

fishnet (noun)	trammel (noun)
a net that will enclose fish when it is pulled in	a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)
	a restraint that is used to teach a horse to amble
	an adjustable pothook set in a fireplace
	a fishing net with three layers; the outer two are coarse mesh and the loose inner layer is fine mesh

fishnet (verb)	trammel (verb)
	place limits on (extent or amount or access)
	catch in or as if in a trap