NOTE: THIS IS PURELY FANON AND THE FOOTAGE IS USED AS EXAMPLES...just to clear up the confusion :) Because I do write instances where kaiju "language" is "translated" into understandable words so that we can see them communicate. Or there are instances where Godzilla tries to communicate to us, and we humans don't "get" it.
I always described it as what he's saying would be a subtitle if my fics were movies :) So here you go!