Boss is etymologically related to Beat. Beat is related to Whip. Whip is related to Punishment. Discipline is a type of Punishment. 
Motor is related to Tour. Tour is related to Venture. Venture is related to Capital. 
Boss --EtymologicallyRelatedTo--> Beat <--RelatedTo--> Whip <--RelatedTo--> Punishment <--IsA-- Discipline 
Motor <--RelatedTo--> Tour <--RelatedTo--> Venture <--RelatedTo--> Capital 