Take care of sb vs. care for sb

[mohammad]

Hello

Dear teacher

Would clarify these for me

1)what is the difference between “take care of sb” and “care for sb”

2)why is this incorrect? (no one cared for him during his illness)

3)does “I am sick” always mean to vomit?, if so we could never use “to be ill” instead of “to be sick “(am I right?)

4)what does (sick leave ) mean?

Yours

[Tdol]

'care for' often means 'like': I don't care for chocloate much.

In British English, we can use 'sick' and 'ill' for any infection, illness, etc, but we don't use 'ill' for 'vomit'. I believe that Americans don't use 'ill' much.
'Sick leave' is when you are away from work, school, etc, because you're ill.