function

[1]	act , operate , perform , behave , work , go , run
[2]	serve , take the role of , act the part of , act as , work as
[3]	work , operate , go , run
[4]	serve
[5]	officiate

[1]	mathematical function , purpose , aim , single-valued function , map , use , role , mapping , responsibility , mission , charge , concern , business , province , duty , job , occupation , work , office , task , chore , assignment , commission , activity
[2]	reception , purpose , role , gathering , affair , use , party , dinner , banquet , gala , ceremony , formality , rite , ritual , occasion , event
[3]	office , part , role
[4]	affair , occasion , social occasion , social function
[5]	routine , subroutine , subprogram , procedure