Nouns

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

Adjectives

(a)elasticcapable of resuming original shape after stretching or compression; springy“an elastic band”, “a youthful and elastic walk”
(s)elastic, flexible, pliable, pliantable to adjust readily to different conditions“a flexible personality”, “an elastic clause in a contract”, “a pliable person”