Luke 22:19, 1 Cor 11:24 & 25, and Heb 10:3 all have
ἀνάμνησις
anamnēsis
an-am’-nay-sis
From anamimnēskō; recollection: - remembrance (again).
the word in Mark is the root of the one in Luke and Paul’s Letters
as for exodus 12:14 the hebrew word is
zikrôn
zik-rone’
From H2142; a memento (or memorable thing, day or writing): - memorial, record.
from
zâkar
zaw-kar’
A primitive root; properly to mark (so as to be recognized), that is, to remember; by implication to mention; also (as denominative from H2145) to be male: - X burn [incense], X earnestly, be male, (make) mention (of), be mindful, recount, record (-er), remember, make to be remembered, bring (call, come, keep, put) to (in) remembrance, X still, think on, X well.
the LXX uses mnêmosynon as Verbum stated above, it is from
μνημεῖον
mnēmeion
mnay-mi’-on
From G3420; a remembrance, that is, cenotaph (place of interment): - grave, sepulchre, tomb.
which is from
μνήμη
mnēmē
mnay’-may
From G3403; memory: - remembrance.
bringing us back to (see my previous post)
μιμνήσκω
mimnēskō
mim-nace’-ko
A prolonged form of G3415 (from which some of the tenses are borrowed); to remind, that is, (middle voice) to recall to mind: - be mindful, remember.
which is a form of
μνάομαι
mnaomai
mnah’-om-ahee
Middle voice of a derivative of G3306 or perhaps of the base of G3145 (through the idea of fixture in the mind or of mental grasp); to bear in mind, that is, recollect; by implication to reward or punish: - be mindful, remember, come (have) in remembrance. Compare G3403.
derived from
μένω
menō
men’-o
A primary verb; to stay (in a given place, state, relation or expectancy): - abide, continue, dwell, endure, be present, remain, stand, tarry (for), X thine own.
well that is the best I can give you unless you have a more specific question