fisherman's knot vs truelove knot

fisherman's knot and truelove knot both are nouns.

Word	Noun	Adjective	Verb	Adverb
fisherman's knot	Yes	No	No	No
truelove knot	Yes	No	No	No

As nouns, fisherman's knot and truelove knot are synonyms defined as:

fisherman's knot and truelove knot: a knot for tying the ends of two lines together

Other synonyms of fisherman's knot include true lover's knot.

fisherman's knot (noun)	truelove knot (noun)
a knot for tying the ends of two lines together	a knot for tying the ends of two lines together