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".
Epicenter
The word is derived from the New Latin noun "epicentrum", the latinisation of the ancient Greek adjective ἐπίκεντρος ("epikentros"), "occupying a cardinal point, situated on a centre", from ἐπί ("epi") "on, upon, at" and κέντρον ("kentron") "centre". The term was coined by the Irish seismologist Robert Mallet.