frica -fic- gismu

x₁ differs/is distinct from/contrasts with/is unlike x₂ in property/dimension/quantity x₃.

Also other-than (less common meaning). See also ranxi, drata, dunli, simsa, vrici.

In notes:

drata: x₁ isn't the-same-thing-as/is different-from/other-than x₂ by standard x₃; x₁ is something else.
dunli: x₁ is equal/congruent to/as much as x₂ in property/dimension/quantity x₃.
ranxi: x₁ is ironic(al)/contrary to expectation x₂ in state/property/aspect x₃.
simsa: x₁ is similar/parallel to x₂ in property/quantity x₃ (ka/ni); x₁ looks/appears like x₂.
vrici: x₁ (set/mass/ind.) is miscellaneous/various/assorted in property x₂ (ka).
po'o: discursive: uniquely, only, solely: the only relevant case.
zu'u: discursive: on the one hand - on the other hand.
ba'urslefrica: x₁ (sound) is phonemically distinguished from x₂ (sound) in language x₃
dubyfrica: x₁ differs in value from / is not equal to x₂
ficybi'o: b₁ becomes different/changes/transforms from f₂ in property/dimension/quantity f₃ under conditions b₃.
tolmapti: m₁ is incompatible with m₂ in aspect m₃.