Modern is the opposite of Classical. Classical is related to Fire. Fire is related to Gas. Gas is a synonym of Boast. 
Literature can be used for Professor. Literature is a type of Profession. Professional is derived from Profession. Lawyer is a type of Professional. 
Modern <--Antonym--> Classical <--RelatedTo--> Fire <--RelatedTo--> Gas <--Synonym--> Boast 
Professor <--UsedFor-- Literature --IsA--> Profession <--DerivedFrom-- Professional <--IsA-- Lawyer 