differ -
be different; "These two tests differ in only one respect"
equal,
be make equal, uniform, corresponding, or matching; "let's equalize the duties among all employees in this office"; "The company matched the discount policy of its competitors"
vary make something more diverse and varied; "Vary the menu"
contrast,
counterpoint put in opposition to show or emphasize differences; "The middle school teacher contrasted her best student's work with that of her weakest student"
differ -
be of different opinions; "I beg to differ!"; "She disagrees with her husband on many questions"