Is hung over a common noun?

Yes, "hung over" is a common noun when it refers to the state of being unwell after drinking too much alcohol.

Here's why:

* Common nouns are general names for people, places, things, or ideas. They are not capitalized unless they start a sentence.

* "Hung over" describes a specific condition, and it's not a unique or proper name.

Here's an example:

* "He woke up with a terrible hung over after the party."

In this sentence, "hung over" is used as a noun to describe the condition the person is experiencing.