"helper" in the noun sense
1. assistant, helper, help, supporter
a person who contributes to the fulfillment of a need or furtherance of an effort or purpose
"my invaluable assistant"
"they hired additional help to finish the work"
2. benefactor, helper
a person who helps people or institutions (especially with financial help)
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License