contrastive

(s) of words so related that one contrasts with the other
- "rich" and "hard-up" are contrastive terms
incompatible,
(s) strikingly different; tending to contrast
- contrasting (or contrastive) colors
contrasting,
(s) syntactically establishing a relation of contrast between sentences or elements of a sentence
- disjunctive conjunctions like "but", "or", or "though" serve a contrastive function

incompatible contrasting

contrasting