Difference between Exogamy and Intermarriage

What is the difference between Exogamy and Intermarriage?

Exogamy as a noun is marriage to a person belonging to a tribe or group other than your own as required by custom or law while Intermarriage as a noun is a marriage between people belonging to different groups, ethnic, religious or otherwise.

We hope you now know whether to use Exogamy or Intermarriage in your sentence.