Assistance may refer to the terms: aid, help, advice , example financial aid, technical assistance , help and advice on special matters, as in marriage.
Assistance refers to the act of assisting. It means help; aid; furtherance; succor and support. Example is the financial assistance extended by the developed countries to Indonesia to aid the victims of the latest earthquake
"Assistance" is in the NAICS Code "62"
(Health Care and Social Assistance Health Care and Social Assistance)