Settle is a type of Arrange. Settle is the opposite of Remove. Removal is derived from Remove. 
Rail is a type of Fish. Rally is etymologically related to Rail. Rally is a type of Gathering. 
Arrange <--IsA-- Settle <--Antonym--> Remove <--DerivedFrom-- Removal 
Fish <--IsA-- Rail <--EtymologicallyRelatedTo-- Rally --IsA--> Gathering 