Regina, Saskatchewan; Canada
I don't know. Maybe it is just forgetfulness. People forgot the word and just need to be reminded of it again. If they see it and hear it more again, then perhaps they will use it again too. It is interesting to note the etymology of the two words poesy and poetry. The word poesy goes back to the Greek word ποιησις [poiesis] "a making, a creation (of anything); poesy" But poetry on the other goes back to the word ποιητρια [poietria], that instead of "poetry", was originally the word for "poetess". I wonder when and how this word for "poetess" eventually came to be used as the main word for "poetry"?