Task is a synonym of Process. Operation is a type of Process. Operation is related to Do. 
Rub is related to Part. Part is a synonym of Cue. Cue is related to Stick. 
Task <--Synonym--> Process <--IsA-- Operation <--RelatedTo--> Do 
Rub <--RelatedTo--> Part <--Synonym--> Cue <--RelatedTo--> Stick 