The groups are part of sexual identity. Some people use something such as "pansexual" or "polysexual". Other people use nothing at all. "Androphilia and gynephilia" are an alternative to the gender binary in homosexual and heterosexual. "Androphilia" is attraction to a man or masculinity (any quality or behavior linked to a man). "Gynephilia" is attraction to a woman or femininity. "Sexual preference" overlaps with sexual orientation but is different. A bisexual person may like one gender more than another. "Sexual preference" may also give the idea of a degree of choice. The scientific consensus (position in the community of scientists) is that sexual orientation is not a choice.