task in WordNet English dictionary

1. a specific piece of work required to be done as a duty or for a specific fee
   "estimates of the city's loss on that job ranged as high as a million dollars"; "the job of repairing the engine took several hours"; "the endless task of classifying the samples"; "the farmer's morning chores"
   job  task  chore 
   
2. any piece of work that is undertaken or attempted
   "he prepared for great undertakings"
   undertaking  project  task  labor 
   

1. use to the limit
   "you are taxing my patience"
   tax  task 
   
2. assign a task to
   "I tasked him with looking after the children"
   task