Uniform is similar to Single. Single is a synonym of Exclusive. 
Justify is related to Explain. Explain is related to Communication. Friendship requires Communication. Friendship is related to Being. 
Uniform <--SimilarTo--> Single <--Synonym--> Exclusive 
Justify <--RelatedTo--> Explain <--RelatedTo--> Communication <--HasPrerequisite-- Friendship <--RelatedTo--> Being 