They do convey thoughts, which is why you know what they mean.
I’m sorry but even as a joke, this is just way too wrong. The examples given of “Mmmmmmmmmmmmmmmmm” and “Aaaarfgfhfhrhhhh” have no meaning. They are, at best, sounds. Making them onomatopoeias.
I’m sorry but even as a joke, this is just way too wrong. The examples given of “Mmmmmmmmmmmmmmmmm” and “Aaaarfgfhfhrhhhh” have no meaning. They are, at best, sounds. Making them onomatopoeias.