contraction vs expansion

contraction and expansion both are nouns.

Word	Noun	Adjective	Verb	Adverb
contraction	Yes	No	No	No
expansion	Yes	No	No	No

contraction (noun)	expansion (noun)
the act of decreasing (something) in size or volume or quantity or scope	the act of increasing (something) in size or volume or quantity or scope
(physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber)	adding information or detail
a word formed from two or more words by omitting or combining some sounds	a discussion that provides additional information
the process or result of becoming smaller or pressed together	a function expressed as a sum or product of terms