Sexual desire is a motivational state and an interest in “sexual objects or activities, or as a wish, need, or drive to seek out sexual objects or to engage in sexual activities”. 

Sexual Activity

Human sexual activity practice is the manner in which humans experience and express their sexuality. People engage in a variety of sexual acts, ranging from activities done alone (e.g., masturbation) to acts with another person (e.g., sexual intercourse, non-penetrative sex, oral sex, etc.).

Intercourse

Intercourse: is the insertion of erect penis into the vagina or anus. It may also be used to describe other forms of sexual activity, such as interfemoral intercourse, oral intercourse, or mammary intercourse.

Natural intercourse

Natural intercourse generally represents vaginal intercourse.

Coitus: is the insertion of the penis into the vagina, followed by rhythmic movements often leading to orgasm. Also referred to as sexual intercourse, copulation, or vaginal intercourse.

Heterosexual

Heterosexuality: is the sexual, emotional, and/or romantic attraction to a sex other than your own.  It is commonly thought of as “attraction to the opposite sex”, but since there are not only two sexes, this definition is inaccurate.

Heterosexism: is the assumption that every person should be heterosexual, thus marginalizing others who do not identify themselves as heterosexual. It also implies that heterosexuality is superior to homosexuality and all other sexual orientations and identities.