Informal is a synonym of Loose. Loose is a different concept from Tight. Tight is the opposite of Lose. 
Scream is related to Emotion. Freedom is a type of Emotion. Freedom is related to Bell. Bell is related to Bronze. 
Informal <--Synonym--> Loose <--DistinctFrom--> Tight <--Antonym--> Lose 
Scream <--RelatedTo--> Emotion <--IsA-- Freedom <--RelatedTo--> Bell <--RelatedTo--> Bronze 