assist
noun
the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose
“he gave me an assist with the housework”
“could not walk without assistance”
(sports) the act of enabling another player to make a good play
verb
give help or assistance; be of service
“Everyone helped out during the earthquake”
“Can you help me carry this table?”
act as an assistant in a subordinate or supportive function
work for or be a servant to
“May I serve you?”
“She attends the old lady in the wheelchair”
Source: WordNet 3.1, Princeton University