My daughter is a nanny. When she goes to work she "nannies" or is "nannying." I have referred to the family of the child who hired her as her "nanny family." But what is the word for the child? I have not been able to find one.
charge(s) works. Here is the first part of an OxED entry:
14.
a. A thing or person entrusted to the care or management of any one.
I did not include the quotations because they did not illustrate this broader meaning very well.
to impute; ascribe the responsibility for:He charged the accident to his own carelessness.
deaconB, I don't think you have a match: your definition is for one of the verb definitions, whereas Emmett's is for one of the noun definitions. That particular noun definition fits well, but sounds a bit cold if the relationship is affectionate. I can't think of a warmer alternative offhand.
The dinition ass a noun is
"Nanny" is a job. You know, like "if you want me to do it, you need to pay me."
We're not talking about Big Brothers / Big Sisters. My favorite waitress greets me with a warm smile, and she means it, but if she doesn't feed me, I won't return, and if I don't pay, I can't return. Nursing is called patient care, even if it's Mildred Ratched.