Cool is a synonym of Easy. Easy is a different concept from Complicated. Complicated is a different concept from Plain. 
Fiber is a type of Fabric. Fabric is a type of Artifact. you are likely to find Artifact in/at/on Museum. you are likely to find Tour in/at/on Museum. 
Cool <--Synonym--> Easy <--DistinctFrom--> Complicated <--DistinctFrom--> Plain 
Fiber --IsA--> Fabric --IsA--> Artifact --AtLocation--> Museum <--AtLocation-- Tour 