plication vs twirl

plication and twirl both are nouns.

Word	Noun	Adjective	Verb	Adverb
plication	Yes	No	No	No
twirl	Yes	No	Yes	No

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

plication: an angular or rounded shape made by folding
twirl: a sharp bend in a line produced when a line having a loop is pulled tight

Other hyponyms of plication include plait, pleat, kink, twist, pucker, ruck, accordion fold, concertina fold, z-fold, zig-zag fold.

plication (noun)	twirl (noun)
the act of folding in parallel folds	the act of rotating rapidly
an angular or rounded shape made by folding	a sharp bend in a line produced when a line having a loop is pulled tight

plication (verb)	twirl (verb)
	turn in a twisting or spinning motion
	cause to spin