Specialty is related to Custom. Custom is a type of Trade. Trade is related to Give. 
Expense is related to Term. Term is related to Boot. Butt is etymologically related to Boot. 
Specialty <--RelatedTo--> Custom --IsA--> Trade <--RelatedTo--> Give 
Expense <--RelatedTo--> Term <--RelatedTo--> Boot <--EtymologicallyRelatedTo-- Butt 