Because it is engaged in by same-sex and opposite sex couples, and is sinful in both cases, it makes sense to use one word.  "Sodomy" has only taken on a caustic sound because it has been buried by homosexual activists, substituted by more benign, normal-sounding "sex" terms, e.g. "anal sex."  But caustic terms are appropriate for sinful acts.

Call someone a "liar" and you'll grab attention; say someone "stretched the truth," and you're hiding evil conduct under benevolent words.