What part of speech is the word blessing?

The word "blessing" can be a few different parts of speech, depending on how it's used in a sentence:

* Noun: This is the most common usage. "The priest gave his blessing to the couple."

* Verb: This is less common, but can happen in some contexts. "May God bless you."

* Adjective: This is also less common, and usually occurs in phrases like "a blessing in disguise" or "a blessing upon us."

So, to determine the part of speech, you need to look at how it's used in the sentence!