Episteme
"Episteme" is a philosophical term derived from the Ancient Greek word ἐπιστήμη "epistēmē", which can refer to knowledge, science or understanding, and which comes from the verb , meaning "to know, to understand, or to be acquainted with".
Epideictic
The philologist Ernst Curtius provides an account of its history, and many examples, in "European Literature and the Latin Middle Ages". Praise and blame were "reduced" to praise by Aristotle, he wrote; and recently another author called it a "blameless genre". He and Lockwood seem to say that what was in the past called rhetoric was later called literature. Curtius believed that misinterpretations of medieval literature occur because so much of it is epideictic, and the epideictic is so alien to us today. During the Middle Ages it became a "school subject" as the sites for political activity diminished in the West, and as the centuries went on the word "praise" came to mean that which was written. During this period literature (more specifically histories, biographies, autobiographies, geographies) were called praise(s).