What part of speech is oath?

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

* Noun: This is the most common usage. It refers to a solemn promise, often made with a vow to God or something sacred.

* Example: "The witness took an oath to tell the truth."

* Verb: This is less common, but it can be used to mean "to swear" or "to make a solemn promise."

* Example: "She oathed to protect her country."

Let me know if you'd like to see more examples or have any further questions!