Break is a type of Stroke. Break is related to Leg. 
Cease is related to Stop. Stop is related to Order. Order is the opposite of Law. Law is related to Firm. 
Stroke <--IsA-- Break <--RelatedTo--> Leg 
Cease <--RelatedTo--> Stop <--RelatedTo--> Order <--Antonym--> Law <--RelatedTo--> Firm 