I think it is "Polysemy" word.. especially if you use it as a noun.. as adjective it is close to "friendly:... as noun it is close to "type" or "nature"

Hello Kind has different meanings As an adjective = care about other people Example: I'm kind to my mother As a noun = sort, type Example: I love all kinds of food

Someone who is kind behaves in a gentle, caring, and helpful way towards other people. (Collins dictionary) I must thank you for being so kind to me. It was very kind of you to come.

Kind is similar to nice, polite, respectful. It’s a compliment. “I enjoy hanging out with her. She is a kind person.”

2 meanings. one is kind is used to show the type, category etc... other meaning is friendly, generous etc...