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".
Erudition
The word erudition came into Middle English from Latin. A scholar is erudite (Latin "eruditus") when instruction and reading followed by digestion and contemplation have effaced all rudeness ("e- (ex-) + rudis"), that is to say smoothed away all raw, untrained incivility. Common usage has blurred the distinction from "learned" but the two terms are quite different.