the quality or state of being dissimilar

The Difference:

    Looking at you
I cannot help supposing
    As I admire the view
That a landscape so imposing
    Must be also true: 

These rocks in their unwrinkled case
    (The apportionment
Of featured precincts in your face)
    Surely represent
The genuine genius of the place. 

    But looking at me
I find it hard believing
    Whatever self I see:
As if by merely moving
    My face could get free 

Of what is nothing more than some
    Irrelevant mask.
On you it's you, and even dumb
    Owns what I must ask:
My body a foreign house, yours home.

Richard Howard.