Is there a term to describe the repeated usage of the same word in a sentence. Repetition is probably too broad for this, as it does not quite capture the deliberate and multiple nature of the repetition.
Some examples include
ELU favourite
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo."
(covered here)
and
That that exists exists in that that that that exists exists in.
James while John had had had had had had had had had had had a better effect on the teacher.
Time times time times time squared equals time times time times time times time
Some of these were listed here What are some examples of awkward sounding but grammatically correct sentences?
but the question/answers don't refer to what this deliberate structure is called.
Murray Walker was always great for
and and and and… he's into the barrier.
But I think that's slightly different.
Best Answer
The word that comes closest to describing this sort of behavior(repetition of the same word in a sentence) is: Epizeuxis
According to Wikipedia:
Some examples provided(among others):
However, do note this in the definition of Epizeuxis:
It appears this sort of repetition is usually done to emphasize some meaning. Accordingly, I'm not sure if a sentence like:
would classify, without any further context.
But then again, upon reading the answers in your cited EL&U questions, it looks like these sentences do make sense. In that case, I would say "Epizeuxis" is indeed the word you're looking for.
Also take a look at Repetition as defined on Wikipedia. There seem to be some other types of repetitions which you might be interested in: