reversible vs nonreversible

reversible is a noun but nonreversible is not a noun.

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

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

reversible (adjective)	nonreversible (adjective)
capable of reversing or being reversed	not reversible or capable of having either side out
capable of being reversed or used with either side out
capable of assuming or producing either of two states
capable of being reversed