employment

[1]	occupation , employ , job , trade , work , business , profession , vocation , calling , livelihood , pursuit , skill , craft , (Colloq) line , (Slang) racket
[2]	hire , hiring , engagement , engaging , employing , taking on , retaining , enlistment , enlisting
[3]	use , utilization , application , operation , implementation
[4]	usage , utilisation , exercise