From the Christian point of view, Pagans are generally considered to be those involved in any religious ceremony, act or practice, rather than obvious Christians. Accordingly, Jews and Muslims also use pagans to describe people outside their religion. Others define paganism as any religion other than Buddhism, Hinduism, Judaism, and Christianity; however, some believe that pagans are people without religious beliefs.
Paganism can refer to polytheism or polytheism, as in ancient Rome. To a large extent, a pagan is also regarded as a person who has no religion and indulges in secular happiness and material wealth; someone who indulges in sensual enjoyment; a hedonist or self indulgent person. Another more modern term is Neo paganism, which refers to some contemporary forms of paganism, such as wizardry worship, druids and gwendon.
Source: @studio_epona