identification
/aɪˌdɛntəfəˈkeɪʃən/
noun
plural -tions
the act of finding out who someone is or what something is :the act of identifying someone or something [noncount]
[noncount] :something that shows who a person is :a document, card, etc., that has your name and other information about you and that often includes your photograph
[noncount] :a feeling that you share and understand the problems or experiences of another person :the act of identifying with someone