other than, variant, divergent, dissimilar
used to be
Two or more words in the same language with the same or very similar meaning (like "huge," "large" and "enormous") are synonyms.
altered changed clashing contrary contrasting differential discrepant distinct distinctive divergent diverse incomparable individual night and day mismatched offbeat opposed other peculiar unalike...
quarrel, rumble, bicker, squabble - I hope that helps you ^^