Is there a difference between “restoring” and “regaining” hit points? (Chill Touch keeps targets from “regaining” hit points.) Can you give me an example of an effect that "restores" hit points?

— Dan Dillon 👥 (@Dan_Dillon_1) January 20, 2020

I’m just finding what seems to be equivalent and therefore confusing language.
Mass Heal: “You restore up to 700 hit points…”
Healing Spirit: “you can cause the spirit to restore 1d6”
Healer Feat: “restore 1d6 + 4 hit points”
Lay on Hands: “you can restore a total number…” All the same effect. Chill touch stops all of it.

— Dan Dillon 👥 (@Dan_Dillon_1) January 20, 2020