al·ter·i·ty 
(ôl-tĕrĭ-tē)
(ôl-tĕrĭ-tē)n. pl. al·ter·i·ties
The state of being different, especially with respect to one's perception of one's identity within a culture; otherness.
[French altérité, otherness, Late Latin alteritās, Latin alter, other; see al-1 in the Appendix of Indo-European roots.]