fretwork vs lattice

fretwork and lattice both are nouns.

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

As nouns, fretwork and lattice are synonyms defined as:

fretwork and lattice: framework consisting of an ornamental design made of strips of wood or metal

Other synonyms of fretwork include latticework.

fretwork (noun)	lattice (noun)
framework consisting of an ornamental design made of strips of wood or metal	framework consisting of an ornamental design made of strips of wood or metal
	small opening (like a window in a door) through which business can be transacted
	an arrangement of points or particles or objects in a regular periodic pattern in 2 or 3 dimensions