changeable vs reversible

changeable is not a noun while reversible is a noun.

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

changeable (noun)	reversible (noun)
	a garment (especially a coat) that can be worn inside out (with either side of the cloth showing)

changeable (adjective)	reversible (adjective)
such that alteration is possible; having a marked tendency to change	capable of reversing or being reversed
capable of or tending to change in form or quality or nature	capable of being reversed or used with either side out
varying in color when seen in different lights or from different angles	capable of assuming or producing either of two states
subject to change	capable of being reversed