Boast is related to Claim. Claim is related to Action. 
Violent is a synonym of Wild. Wild is a synonym of Wilderness. Frontier is a type of Wilderness. Frontier is a synonym of March. 
Boast <--RelatedTo--> Claim <--RelatedTo--> Action 
Violent <--Synonym--> Wild <--Synonym--> Wilderness <--IsA-- Frontier <--Synonym--> March 