Making out（爱抚/亲吻） is a euphemism of American origin, dating back to at least 1949, and is used synonymously with the terms kissing, petting and necking, but may also refer to non-penetrative sex acts such as heavy petting.

Snogging（爱抚/亲吻） is a term with roughly the same meaning in British English and related varieties of English.

一个美，一个英。