μετα·νοέω
Lit: "think-after", "change-mind" ("νους" -- logical mind -- as distinguished from "φρην" -- reins of emotion/intuition).
https://lexicon.katabiblon.com/index.php?lemma=μετανοέω
μετα·μέλομαι
Lit:"care/concern-change/after", hence regret, care-after, feel-remorse. Often rendered "repent", but distinct from "μετανοέω" (change-thinking, repent). More feeling than thinking. LXX: relent/repent
https://lexicon.katabiblon.com/index...6;αι
то есть, действие μετα·νοέω идёт на уровне ума, а действие μετα·μέλομαι - на уровне чувства