Potty training

So my son seems 100% ready to start using the potty, he gets so irritated at diapers and tries to pull them off before/after he goes pee or poop. HOWEVER, he doesn’t really talk so for the past couple of months I’ve been trying to introduce the words potty, pee, and poop to him but nothing. So my only fear is, if I start potty training and he can’t even express he has to go how am I supposed to do it?