alterity

n. diversity; state of being different; state or quality of being other

Alterity means 'otherness', strictly being in the sense of the other of two (Latin alter). It is generally now taken as the philosophical principle of exchanging one's own perspective for that of the "other." The concept was established by Emmanuel Lévinas in a series of essays, collected under the title Alterity and Transcendence.
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(n.)
The state or quality of being other; a being otherwise.
  

lack of identification with some part of one's personality or one's community, differentness, otherness.