WordRel.com

• the distinct personality of an individual regarded as a persisting entity

  synonym	individualitypersonal identity
  derivation	identify
  hypernym	personality
  hyponym	gender identityidentificationpersonhood

• exact sameness

  synonym	identicalnessindistinguishability
  derivation	identicalidenticalidentifyidentify
  hypernym	sameness
  hyponym	onenessselfsamenessunity

• the individual characteristics by which a thing or person is recognized or known

  derivation	identifyidentifyidentify
  hypernym	identificationrecognition

• an operator that leaves unchanged the element on which it operates

  synonym	identity elementidentity operator
  hypernym	operator