As a Noun:
1. Attention and thought you give to something. English = care.
2. Attention and help you give to someone who needs help, for example because they are sick. English = care.
As a Verb or Adjective:
1. To do something with a lot of attention and thought or to do it thoroughly and make sure that all the details are correct. English = (be) careful.
1. Used alone to warn someone of a danger or a problem. English = 'Be careful!', 'Watch out!', 'Beware', and so on.