Greek words for a woman who prefers sex with another woman include "hetairistria" (compare "hetaira", "courtesan" or "companion"), "tribas" (plural "tribades"), and "Lesbia"; Latin words include the loanword "tribas", "fricatrix" ("she who rubs"), and "virago". References to sex between women are infrequent in the Roman literature of the Republic and early Principate. Ovid, who advocates generally for a heterosexual lifestyle, finds it "a desire known to no one, freakish, novel ... among all animals no female is seized by desire for female".