General Results
Some words are significantly different, even across native speaker corpora
between 13% and 20% per pair:
PELCRA - Spoken 13%
PELCRA - NewSci 18%
PELCRA - BBC 19%
Spoken - BBC 20%
Spoken - NewSci 15%
BBC - NewSci 18%
Mason and Uzar - NLP & TEFL