change has 14 distinct synonyms spread across 9 of its 20 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is stay.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an event that occurs when something passes from one state or phase to another
“the change was intended to increase sales”
a relational difference between states; especially between states before and after some event
“he attributed the change to their marriage”
the action of changing something
“the change of government had no impact on the economy”
the result of alteration or modification
“there were marked changes in the lining of the lungs”
the balance of money received when the amount you tender is greater than the amount due
“I paid with a twenty and pocketed the change”
a thing that is different
“he inspected several changes before selecting one”
a different or fresh set of clothes
“she brought a change in her overnight bag”
coins of small denomination regarded collectively
“he had a pocketful of change”
money received in return for its equivalent in a larger denomination or a different currency
“he got change for a twenty and used it to pay the taxi driver”
a difference that is usually pleasant
“he goes to France for variety”
lay aside, abandon, or leave for another
“switch to a different brand of beer”
change clothes; put on different clothes
“Change before you go to the opera”
remove or replace the coverings of
“Father had to learn how to change the baby”
Synonyms, antonyms and the broader and narrower relations for change come from Princeton University’s WordNet. Full sources and licences.