Bolt is a type of Bar. Bolt is related to Lock. 
Wait is related to Instruction. Instruction is a synonym of Order. Order is a different concept from Random. Random is a synonym of Unexpected. 
Bar <--IsA-- Bolt <--RelatedTo--> Lock 
Wait <--RelatedTo--> Instruction <--Synonym--> Order <--DistinctFrom--> Random <--Synonym--> Unexpected 