opposite — situated, placed, or lying face to face with something else or each other, or in corresponding positions with relation to an intervening line, space, or thing: opposite ends of a room.
unequal — not equal; not of the same quantity, quality, value, rank, ability, etc.: People are unequal in their capacities.
unlike — different, dissimilar, or unequal; not alike: They contributed unlike sums to charity.
changeable — Someone or something that is changeable is likely to change many times.
noun equivalent
difference — the state or relation of being different; dissimilarity: There is a great difference between the two.
