rapier vs tuck

rapier and tuck both are nouns.

Word	Noun	Adjective	Verb	Adverb
rapier	Yes	No	No	No
tuck	Yes	No	Yes	No

As nouns, rapier and tuck are synonyms defined as:

rapier (noun)	tuck (noun)
a straight sword with a narrow blade and two edges	a narrow flattened pleat or fold that is stitched in place
	a straight sword with a narrow blade and two edges
	(sports) a bodily position adopted in some sports (such as diving or skiing) in which the knees are bent and the thighs are drawn close to the chest
	eatables (especially sweets)

rapier (verb)	tuck (verb)
	fit snugly into
	make a tuck or several folds in
	draw together into folds or puckers