Crow is a proper noun or common noun?

"Crow" can be both a proper noun and a common noun, depending on the context.

* Common Noun: When referring to the species of bird, "crow" is a common noun. For example: "The crow flew over the field."

* Proper Noun: When referring to a specific, named crow, "Crow" becomes a proper noun. For example: "Crow, the raven, was the wisest of all the birds."

Let me know if you have any other examples you'd like to explore!