* Verb: This is the most common use. It means to ask for divine favor or protection, or to express good wishes.
* Example: "May God bless you."
* Noun: This is less common, but it can refer to a blessing itself.
* Example: "The priest gave them his blessing."
* Interjection: Used as a polite or casual expression of thanks or agreement.
* Example: "Bless you!" (after someone sneezes)
* Example: "Bless your heart, you're so kind."
So, the part of speech for "bless" depends on the context of the sentence.