A Change

(countable, uncountable) The process of becoming different.
(uncountable) Small denominations of money given in exchange for a larger denomination.
(countable) A replacement, e.g. a change of clothes
(uncountable) Money given back when a customer hands over more than the exact price of an item.
(uncountable) Usually coins (as opposed to paper money), but sometimes inclusive of paper money
(countable) A transfer between vehicles.
(baseball) A change-up pitch.
(campanology) Any order in which a number of bells are struck, other than that of the diatonic scale.
(dated) A place where merchants and others meet to transact business; an exchange.
(Scotland, dated) A public house; an alehouse.

Adjectives often applied to "change": big, small, major, minor, dramatic, drastic, rapid, slow, gradual, radical, evolutionary, revolutionary, abrupt, sudden, unexpected, incremental, social, economic, organizational, technological, personal, cultural, political, technical, environmental, institutional, educational, genetic, physical, chemical, industrial, geological, global, local, good, bad, positive, negative, significant, important, structural, strategic, tactical.