accordion fold vs plication

accordion fold and plication both are nouns.

Word	Noun	Adjective	Verb	Adverb
accordion fold	Yes	No	No	No
plication	Yes	No	No	No

As nouns, plication is a hypernym of accordion fold; that is, plication is a word with a broader meaning than accordion fold:

accordion fold: a continuous parallel folding in an accordion-like fashion, that is with folds alternatively made to the front and back in zig-zag folds.
plication: an angular or rounded shape made by folding

Other hypernyms of accordion fold include bend, crease, crimp, flexure, fold.

accordion fold (noun)	plication (noun)
a continuous parallel folding in an accordion-like fashion, that is with folds alternatively made to the front and back in zig-zag folds.	the act of folding in parallel folds
	an angular or rounded shape made by folding