Sir, - Your recent correspondent, Mrs Smith, may be interested to learn that English is fifty per cent French, which, being a Romance language, derives largely from Latin. Per cent is purer Latin than pour cent (French) or por ciento (Spanish).
One (the ubiquitous French "on") may be granted a French cordial reception, or just given in Teutonic hearty welcome. As for telefono or aeropuerto, that's all Greek and Latin to me. Yours, etc.,
Ardeevin Avenue, Lucan, Co Dublin.