Is kind a noun or adjective?

"Kind" can be both a noun and an adjective, depending on its usage.

Noun:

* Definition: A group of people or things having similar characteristics.

* Example: "There are many kinds of flowers."

Adjective:

* Definition: Gentle, friendly, and caring.

* Example: "She is a kind and compassionate person."

So, you need to look at the sentence to determine which part of speech it is being used as.