Horse is related to Buddy. Buddy is a synonym of Mate. Mate is the opposite of Opponent. 
Thigh is a type of Limb. Hip is part of Thigh. Hip is related to Music. Musical is derived from Music. 
Horse <--RelatedTo--> Buddy <--Synonym--> Mate <--Antonym--> Opponent 
Limb <--IsA-- Thigh <--PartOf-- Hip <--RelatedTo--> Music <--DerivedFrom-- Musical 