Format is part of Publication. Format is a type of Change. Change is a synonym of Vary. Vary is a different concept from Consistent. 
Stair is related to Walking. Walking is related to Travel. 
Publication <--PartOf-- Format --IsA--> Change <--Synonym--> Vary <--DistinctFrom--> Consistent 
Stair <--RelatedTo--> Walking <--RelatedTo--> Travel 