Bisexuality has a universal history. People in most known societies have exhibited varying degrees of bisexuality, and most of what is called homosexuality and lesbianism in previous cultures is in fact bisexuality, (it should be noted, however, that the terms heterosexuality, bisexuality and particularly homosexuality, may not be appropriate in the historical context. In most traditional societies, behaviour was considered homosexual while people were not labeled using such terms. Similarly, heterosexuality and bisexuality are also relatively modern concepts).