What kind of noun is theater?

"Theater" can be both a common noun and a proper noun, depending on how it's used:

* Common noun: When referring to the general concept of a place for performing plays, musicals, or other dramatic events.

* Example: "The new theater in town is hosting a Broadway show."

* Proper noun: When referring to a specific theater, often with a name.

* Example: "I saw a play at the Belasco Theatre."

Let me know if you have any other word you'd like to classify!