Ritual is a type of Custom. Custom is related to Tax. Tax is related to Form. Form is related to Paper. 
Patch is etymologically related to Pat. Patch is a synonym of Plot. 
Ritual --IsA--> Custom <--RelatedTo--> Tax <--RelatedTo--> Form <--RelatedTo--> Paper 
Pat <--EtymologicallyRelatedTo-- Patch <--Synonym--> Plot 