elastic vs expansible

elastic is a noun but expansible is not a noun.

Word	Noun	Adjective	Verb	Adverb
elastic	Yes	Yes	No	No
expansible	No	Yes	No	No

elastic (noun)	expansible (noun)
a fabric made of yarns containing an elastic material
a narrow band of elastic rubber used to hold things (such as papers) together

elastic (adjective)	expansible (adjective)
capable of resuming original shape after stretching or compression; springy	(of gases) capable of expansion
able to adjust readily to different conditions	able to expand or be expanded