Final answer:
The terms 'masculine' and 'feminine' mainly refer to a person's gender, not their biological sex. Gender encompasses the roles and behaviors society deems appropriate for men and women, separate from biological differences.
Step-by-step explanation:
The terms “masculine” and “feminine” refer to a person's gender. While “sex” typically refers to biological differences, “gender” relates to societal and cultural roles, behaviors, and attributes that a society considers appropriate for men and women. The distinction between sex and gender has been increasingly recognized in academic and social discourse, leading to a broader understanding of the complexity of identity and expression.