care

Care is close attention or a concern for another. (noun)

An example of care is how someone feels about the well being of their pet.
An example of care is someone paying special attention to how they are driving in unfavorable weather.
An example of care is someone leaving their children to be watched over by another.

Care means to have feelings like concern, responsibility or love for someone or something. (verb)

An example of care is someone feeling anxious about their spouse going out to a singles bar.
An example of care is how someone feels about their friend's well-being.

See care in Webster's New World College Dictionary