rubber band vs elastic

rubber band and elastic both are nouns.

Word	Noun	Adjective	Verb	Adverb
rubber band	Yes	No	No	No
elastic	Yes	Yes	No	No

As nouns, rubber band and elastic are synonyms defined as:

rubber band and elastic: a narrow band of elastic rubber used to hold things (such as papers) together

Other synonyms of rubber band include elastic band.

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

rubber band (adjective)	elastic (adjective)
	capable of resuming original shape after stretching or compression; springy
	able to adjust readily to different conditions