What part of speech is frost?

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

* Noun: This is the most common usage, referring to the white, ice crystals that form on surfaces when temperatures drop below freezing.

* Example: "The frost covered the field in a sparkling white blanket."

* Verb: This is less common but can be used to mean "to cover with frost".

* Example: "The windows frosted over during the night."

* Adjective: While less common, it can be used to describe something as having a frosty appearance or quality.

* Example: "The frosty air bit at our cheeks."

So, without context, it's difficult to definitively say what part of speech "frost" is.