Is an actor who brings his or her interpretation to a role a poet?The word "poem" comes from the French ca. 15th century, derived from a Greek word, ποιεῖν, a form of a word for the verb, "make"; its context included the verb, "create", and developed a post-Homeric application for constructed verse, which includes the verbs for composing or writing poetry, as well as the verb ""invent".
The core of poetry would seem to have to do with creative expression.
If they, say sigh in a particular ,modulated way could that be described as a poem?
Yes, I learned the derivation of the word "poet" almost 60 years ago from my Greek teacher (we called him "Bomber" as he must have been in the war over Germany)
.But I imagine even then (when the word was so used) it was possible to enquire where that word had come from.
I believe there is some Sanskrit in ancient Greek words and sometimes you can follow derivations of words as far back as that (I am no expert but sometimes I do post questions like that on a website where members would be experts )