quasiequivalent
nonsimilar
another
dissimilar
first-of-its-kind
allo-
along the lines of
on the lines of
other
different
distinctively
nonidentical
nother
variation
distinct
otherwise
contrastive
contrasting
undiffering
hetero-
two sides of the same coin
like that
alternative
different breed of cat
counter
opposite
nonsimilarly
assimilate
sameish
tiger of a different stripe
differing
dissimilarly
contrastively
contrast
match up
unalike
oppositely
differently
transformed
nonequivalent
stick out a mile
contrapose
antipode
a whole nother
contrarily
same, same, but different
homogeneous
analogous
consimilar
correspondent