Yes, Americans. I attended an American school for a couple of terms as an exchange pupil (incidentally I think the Americans influenced our downgrading of 'student' to near infant level).
In class we were asked the meaning of FECUND. Up shoots my hand - 'Fertile, sir', knowing I was right. Puzzled look from teacher, repeat answer from me - then the realisation from teacher: 'Ah! FURTLE! We suffer from the lack of a common language.'