Different is a different concept from Unique. Unique is related to Particular. 
Object is related to Drop. Drop is related to Tear. Tear is a synonym of Gap. Gap is a synonym of Hole. 
Different <--DistinctFrom--> Unique <--RelatedTo--> Particular 
Object <--RelatedTo--> Drop <--RelatedTo--> Tear <--Synonym--> Gap <--Synonym--> Hole 