<< My "abstract thoughts" are a stream of words too, they just don't get sounded out.
Hmm, seems unlikely. They are not sounded out part is true, sure, but I question whether 'abstract thoughts' can be so easily dismissed as mere words.
edit: come to think of it and I am asking this for a reason: do you hear your abstract thoughts?
Different people have different levels of internal monologuing or none at all. I don't generally think with words in sentences in my head, but many people I know do.