Purchase is related to Price. Price is related to Unit. Unit is related to Department. Department is related to Clothing. 
Primary is a synonym of Principal. Principal is a type of Film. Film is a type of Record. Record is related to Button. 
Purchase <--RelatedTo--> Price <--RelatedTo--> Unit <--RelatedTo--> Department <--RelatedTo--> Clothing 
Primary <--Synonym--> Principal --IsA--> Film --IsA--> Record <--RelatedTo--> Button 