elastic band vs rubber band

elastic band and rubber band both are nouns.

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

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

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

Other synonyms of elastic band include elastic.

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