Living can be used for Existing. Living is related to Household. Household is related to Family. Family is a type of Sword. 
Fighting is related to Enemy. Enemy is related to People. 
Existing <--UsedFor-- Living <--RelatedTo--> Household <--RelatedTo--> Family --IsA--> Sword 
Fighting <--RelatedTo--> Enemy <--RelatedTo--> People 