A woman orally stimulating the nipples of her sexual partner Commonly, women engage in displays of affection, such as kissing on the cheek or hugging. A kiss on the lips, a prolonged kiss or hug, or other forms of touching, may or may not be regarded as sexual.
Sex educator and feminist Shere Hite stated that one of her female research subjects had written, "Sex with a woman includes: Allowing such acts of physical intimacy, especially the stimulation of a partner's breasts and nipples, is an indication of reciprocal interest in sexual activity.
A woman's mouth, lips and tongue may be sensitive erogenous zones; they are commonly used by partners during the preliminary stages and throughout a sexual activity, whether for kissing, sucking, licking or specifically for oral sex. The stimulation of a partner's breasts, including oral or manual stimulation of the nipples , is a form of foreplay. Breast and nipple stimulation of women is a common aspect of sexual activity.
Besides creating maternal feelings in a woman, it also decreases her anxiety and increases bonding and trust. The oral stimulation of the anus , called anilingus , is less often practiced. Oral or manual stimulation of the vulva, and in particular the clitoris, is the most common way for a woman to reach and achieve an orgasm. Massaging inside of the vagina may stimulate a very sensitive area, sometimes termed the G-spot area. For some women, stimulating the G-spot area creates a more intense orgasm than direct clitoral stimulation.
Tribadism is a common non-penetrative sexual act between women. It involves a woman rubbing her vulva against her partner's vulva, thigh, stomach, buttocks, arm, or another body part. This may be achieved in a number of sex positions , including a missionary , a woman on top , doggy style , scissoring or other position.
For example, a person in a doggy style position may be passive and open to a variety of sex acts, generally at the choice of the active partner, such as fingering from behind, massage or stimulation of erogenous zones, including the genitals, nipples, or buttocks, and receiving a playful spank to the buttocks.
To ensure passivity and to enhance the feeling of or actual female submission , a partner may also take part in bondage such as handcuffs or in other BDSM activities. She is dependent for her sexual satisfaction on the actions of her partner, who can choose the type and pace of the sexual activity and can introduce sex toys.
For example, a pecker gag can be used to gag the restrained partner as well as to require her to suck during sexual activity in a similar manner to an adult pacifier. The active partner has the role of treating the restrained partner as a sex object to be used for her own sexual satisfaction.
The active partner may herself derive sexual satisfaction from providing her sex partner with sexual satisfaction and bringing her to orgasm. Blair contradict research indicating that women in same-sex relationships are more sexually satisfied than their heterosexual counterparts. Schwartz concluded that lesbian couples in committed relationships have less sex than any other type of couple, and that they generally experience less sexual intimacy the longer the relationship lasts, though this study has been subject to debate see Lesbian bed death.
However, this recent study also reported that women in same-sex relationships spent significantly longer amounts of time on individual sexual encounters - often spending upwards of two hours on an individual encounter.
Consequently, what lesbians may lack in frequency, they may make up for with longer durations. Masters and Johnson concluded that vaginal penetration with dildos is rare and lesbians tend to do more overall genital stimulation than direct clitoral stimulation, which is also often the case for heterosexual relationships.
Some lesbian or bisexual women dislike oral sex because they do not like the experience or due to psychological or social factors, such as finding it unclean.
Lesbians in their 30s were twice as likely as other age groups to engage in anal stimulation with a finger or dildo. Like older studies, the data also showed that vaginal penetration with dildos, or with other sex toys, among women who have sex with women is rare. When lesbian sexual activity is of a non-penetrative nature, the risk of exchange of bodily fluids is generally lower and therefore the incidence of transmission of sexually transmitted infections is also relatively low,   especially when contrasted by penetrative sexual activities between male-female or male-male couples.
The CDC reported there is little data available regarding the risk of spreading sexually transmitted infections between women.