pleat vs box pleat

pleat and box pleat both are nouns.

Word	Noun	Adjective	Verb	Adverb
pleat	Yes	No	Yes	No
box pleat	Yes	No	No	No

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

pleat: any of various types of fold formed by doubling fabric back upon itself and then pressing or stitching into shape
box pleat: a flat double pleat made by folding under the fabric on either side of it

Other hyponyms of pleat include inverted pleat, kick pleat, knife pleat, tuck.

pleat (noun)	box pleat (noun)
any of various types of fold formed by doubling fabric back upon itself and then pressing or stitching into shape	a flat double pleat made by folding under the fabric on either side of it

pleat (verb)	box pleat (verb)
pleat or gather into a ruffle
fold into pleats