eiderdown vs quilt

eiderdown and quilt both are nouns.

Word	Noun	Adjective	Verb	Adverb
eiderdown	Yes	No	No	No
quilt	Yes	No	Yes	No

As nouns, quilt is a hypernym of eiderdown; that is, quilt is a word with a broader meaning than eiderdown:

eiderdown: a soft quilt usually filled with the down of the eider
quilt: bedding made of two layers of cloth filled with stuffing and stitched together

Other hypernyms of eiderdown include comfort, comforter, puff.

eiderdown (noun)	quilt (noun)
down of the eider duck	bedding made of two layers of cloth filled with stuffing and stitched together
a soft quilt usually filled with the down of the eider

eiderdown (verb)	quilt (verb)
	create by stitching together
	stitch or sew together