sex

Definition

The word can mean either the physical act of sexual activity or refer to whether someone is male or female (biological gender).

Usage & Nuances

Used both as a noun for intercourse ('have sex') and for biological category ('sex: male/female'). Can be formal or informal depending on context. In forms, 'sex' means gender. 'Gender' is more common for identity; 'sex' is used in scientific, medical, or official contexts.

Example Sentences