nonequivalent

adjective

non·​equiv·​a·​lent ˌnän-i-ˈkwiv-lənt 

-ˈkwi-və-

: not equivalent

nonequivalent quantities

… endorsement rates may differ simply because nonequivalent labels were used in different languages …

—Bert Weijters et al.

nonequivalence

ˌnän-i-ˈkwiv-lən(t)s 

-ˈkwi-və-

noun

the nonequivalence of/between the two versions

Word History

First Known Use

1885, in the meaning defined above