Kafir is an Arabic term in Islam which refers to a person who disbelieves the God in Islam, denies his authority, rejects the tenets of Islam, or simply is not Muslim and does not believe in the guidance of the Islamic prophet, Muhammad.
The Kafirs of Natal and the Zulu Country by Rev. Joseph Shooter
Paganism is a term first used in the fourth century by early Christians for people in the Roman Empire who practiced polytheism, or ethnic religions other than Judaism. In the time of the Roman Empire, individuals fell into the pagan class either because they were increasingly rural and provincial relative to the Christian population, or because they were not milites Christi. Alternative terms used in Christian texts were hellene, gentile, and heathen. Ritual sacrifice was an integral part of ancient Graeco-Roman religion and was regarded as an indication of whether a person was pagan or Christian. Paganism has broadly connoted the "religion of the peasantry".
Depiction from 1887 showing two Roman women offering a sacrifice to the goddess Vesta
Reconstruction of the Parthenon, on the Acropolis of Athens, Greece
Some megaliths are believed to have religious significance.
Children standing with The Lady of Cornwall in a neopagan ceremony in England