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Keywords:

  • family demography;
  • family theory;
  • marriage;
  • sexual orientation

I propose that homogamy and heterogamy be used to signify same-sex and opposite-sex unions, respectively, including marriage and cohabitation. This is intended to address a terminology impasse that has given us marriage versus same-sex marriage in popular and academic usage. After a brief review of the word origins and scholarly uses of these terms, I conclude that the new uses for homogamy and heterogamy could be adopted relatively easily, with scientific benefits for categorization, and could remove a conservative bias in the current usage.