Donator
Part of speech: noun
Definition: One who donates.
Donor
Part of speech: noun
Definition: One who donates typically money.
Donator as a noun is one who donates. while Donor as a noun is one who donates typically money.
Part of speech: noun
Definition: One who donates.
Part of speech: noun
Definition: One who donates typically money.
We hope you now know whether to use Donator or Donor in your sentence.