Represent is the opposite of Lawyer. Lawyer is related to Law. Law is related to Mandate. 
Grab is a synonym of Grasp. Grasp is a synonym of Understanding. Understanding is related to Reading. 
Represent <--Antonym--> Lawyer <--RelatedTo--> Law <--RelatedTo--> Mandate 
Grab <--Synonym--> Grasp <--Synonym--> Understanding <--RelatedTo--> Reading 