changeable vs iridescent

changeable and iridescent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
changeable	No	Yes	No	No
iridescent	No	Yes	No	No

As adjectives, changeable and iridescent are synonyms defined as:

changeable and iridescent: varying in color when seen in different lights or from different angles

Other synonyms of changeable include chatoyant, shot.

changeable (adjective)	iridescent (adjective)
such that alteration is possible; having a marked tendency to change	having a play of lustrous rainbow colors
capable of or tending to change in form or quality or nature	varying in color when seen in different lights or from different angles
varying in color when seen in different lights or from different angles
subject to change