have in common
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have something in common (with someone or something)
[for groups of people or things] to resemble one another in specific ways. Bill and Bob both have red hair. They have that in common with each other. Bob and Mary have a lot in common. I can see why they like each other.
have something in common (with somebody/something)
to share interests or characteristics What these very old objects have in common is that they were all stolen and smuggled out of the country. What does the new model have in common with earlier versions?
Usage notes: also used in the forms have nothing in common and have a lot in common: The two women had absolutely nothing in common. The two men had a lot in common and got along well.