4202 porneia por-ni'-ah from 4203; harlotry (including adultery and incest); figuratively, idolatry:--fornication.

4203 porneuo porn-yoo'-o from 4204; to act the harlot, i.e. (literally) indulge unlawful lust (of either sex), or (figuratively) practise idolatry:--commit (fornication).