the act of contrasting people, things

difference

(an example of) the state of being unlike

dissimilarity, distinctness

difference; absence of agreement

conflict, disagreement

(an instance of) a difference in quality, size etc (between)

difference

(an instance of) being distinct; that which makes one thing different from another

differentiation; feature

(an instance of) the state of being inconsistent

discrepancy

all the characteristics that belong to an individual and that distinguish her or him from others

personality