fretwork vs trellis

fretwork and trellis both are nouns.

Word	Noun	Adjective	Verb	Adverb
fretwork	Yes	No	No	No
trellis	Yes	No	Yes	No

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

fretwork: framework consisting of an ornamental design made of strips of wood or metal
trellis: latticework used to support climbing plants

Other hyponyms of fretwork include treillage.

fretwork (noun)	trellis (noun)
framework consisting of an ornamental design made of strips of wood or metal	latticework used to support climbing plants

fretwork (verb)	trellis (verb)
	train on a trellis, as of a vine