Occupation is a synonym of Job. Job is related to Banker. Banker can be used for Banking. Banking is related to Profit. 
Custom is related to Import. Import is related to Advantage. Advantage is related to Bonus. 
Occupation <--Synonym--> Job <--RelatedTo--> Banker --UsedFor--> Banking <--RelatedTo--> Profit 
Custom <--RelatedTo--> Import <--RelatedTo--> Advantage <--RelatedTo--> Bonus 