Adverse, Ally, Analogue, Antagonistic, Anti, Antipathetic, Antipodes, Antithesis, Antithetic, Antonym, Associate, Balancing, Brother, Clashing, Cognate, Companion, Compensating, Complement, Conflicting, Confronting, Contra, Contradictory, Contrary, Contrasted, Converse, Coordinate, Correlate, Correlative, Correspondent, Counter, Counterbalance, Counterbalancing, Counterpart, Counterpoint, Counterpoise, Discordant, Discrepant, Display, Equivalent, Facade, Face, Facet, Facia, Facing, Fellow, Foil, Fore, Forefront, Foreground, Forehand, Foreland, Foreword, Front, Frontage, Frontal, Frontier, Frontispiece, Head, Heading, Heads, Hostile, Image, Inconsistent, Inimical, Inverse, Lap, Like, Likeness, Mate, Offset, Opposed, Opposing, Opposite, Oppositional, Parallel, Pendant, Perverse, Picture, Polar, Preface, Prefix, Priority, Proscenium, Reciprocal, Repugnant, Reverse, Similitude, Simulacrum, Sister, Such, Suchlike, Tails, Tally, Twin