Definition of "differ"

differ¹

/ˈdɪfə/

verb
third-person singular simple present differs, present participle differing, simple past and past participle differed
1. (intransitive) Not to have the same traits or characteristics; to be unalike or distinct.
2. (intransitive, people, groups, etc.) To have diverging opinions, disagree.
  Quotations
  I differ from the honourable baronet on both these subjects
  May 11, 1827, George Canning, Changes in the Administration
3. (intransitive) To be separated in quantity.

differ²

/ˈdɪfə/

noun
plural differs
1. (computing) A program that diffs, a diff.