natsiyr (Hebrew #5336)
properly, conservative; but used passively, delivered
KJV usage: preserved.
Pronounce: naw-tsere'
natsar (Hebrew #5341)
to guard, in a good sense (to protect, maintain, obey, etc.) or a bad one (to conceal, etc.)
KJV usage: besieged, hidden thing, keep(-er, -ing), monument, observe, preserve(-r), subtil, watcher(-man).
Pronounce: naw-tsar'
Origin: a primitive root