lath vs slat

lath and slat both are nouns.

Word	Noun	Adjective	Verb	Adverb
lath	Yes	No	No	No
slat	Yes	No	Yes	No

As nouns, slat is a hypernym of lath; that is, slat is a word with a broader meaning than lath:

lath: a narrow thin strip of wood used as backing for plaster or to make latticework
slat: a thin strip (wood or metal)

Other hypernyms of lath include spline.

lath (noun)	slat (noun)
a narrow thin strip of wood used as backing for plaster or to make latticework	a thin strip (wood or metal)

lath (verb)	slat (verb)
	close the slats of (windows)
	equip or bar with slats