To be concerned (about), to have an interest (in); to feel concern (about).

“"She doesn't care what you think." "I don't care, I'm still going."”

(polite) To want, to desire; to like; to be inclined towards.

“I don't care to hear your opinion.”

(with for) To look after or look out for.

“He cared for his mother while she was sick.”

The act of one who cares.

(of a person) Kind, sensitive, empathetic.

“She's a very caring person; she always has a kind word for everyone.”