NLP, CL, LCT what's the difference and how can I get in?

Hi. I'm a TEFL student (Teaching English as a Foreign language) and I'm interested in getting into one of the mentioned fields. LCT (language communication and technologies) popped up when I was looking into to the erasmus mundus scholarship. Looked very similar to the other two but i can't tell the difference.

I'm literally willing to do anything to get into one of these cuz i don't think i can get anywhere with teaching.

So

1. What courses would be …

difference languagetechnology nlp