From the 18th century, "donkey" gradually replaced "ass" and "jenny" replaced "she-ass", which is now considered archaic. The change may have come about through a tendency to avoid pejorative terms in speech and may be comparable to the substitution in North American English of "rooster" for "cock", or that of "rabbit" for "coney", which was formerly homophonic with "cunny" (a variation of the word cunt). By the end of the 17th century, changes in pronunciation of both "ass" and "arse" had caused them to become homophones in some varieties of English. Other words used for the ass in English from this time include "cuddy" in Scotland, "neddy" in southwestern England and "dicky" in southeastern England; "moke" is documented in the 19th century and may be of Welsh or Romani origin.