Past Tense:
* She cared deeply for her elderly grandmother. (Expressing love and concern)
* He didn't care what people thought about his unusual hobbies. (Expressing indifference)
* The doctor cared for the patient's wounds with gentle hands. (Expressing medical attention)
* I cared for the dog while my friend was on vacation. (Expressing responsibility)
Past Participle:
* The abandoned puppy was well-cared for by the kind woman. (Expressing being looked after)
* He was deeply cared for by his family during his illness. (Expressing emotional support)
With "about":
* I don't care about what they say. (Expressing lack of interest)
* He really cared about the environment. (Expressing concern)
With "for":
* She cared for her children with all her heart. (Expressing love and devotion)
* The nurse cared for the patients with great compassion. (Expressing empathy and dedication)
The meaning of "cared" will depend on the context of the sentence.