Loud is the opposite of Soft. Soft is related to Rub. File entails/necessarily involves Rub. Column is a type of File. 
Characteristic is a synonym of Trait. Trust is a type of Trait. Trust is a synonym of Swear. 
Loud <--Antonym--> Soft <--RelatedTo--> Rub <--Entails-- File <--IsA-- Column 
Characteristic <--Synonym--> Trait <--IsA-- Trust <--Synonym--> Swear 