Bisexual describes an orientation of sexual activities or feelings towards other people of either sex (both men and women). It is one of the main categories of sexual orientation, alongside heterosexual (attraction to the opposite sex) and homosexual (attraction to the same sex). Bisexuality is characterised by attraction to more than one gender, although the degree and nature of attraction can vary among individuals who identify as bisexual. It is important to recognise bisexuality as a distinct and valid sexual orientation, not merely a transitional phase or an equal attraction to both sexes. The understanding and acceptance of bisexuality have evolved over time, and it continues to be a topic of discussion and increasing visibility in contemporary society.