Sentence:  Even in an era when <WSD>individuality</WSD> in dress is a cult, his clothes were noticeable. He was wearing a hard hat of the low round kind favoured by hunting men, and with it a black duffle-coat lined with white. 
Meaning of the word marked with <WSD> tags:  The characteristics that contribute to the differentiation or distinction of someone or something from a group of otherwise comparable identity.