Alliance is a synonym of League. League is related to Division. Division is related to Operator. Operator is a type of Businessman. 
Welcome is the opposite of Thank. Thank is related to Reward. Reward is a type of Blessing. 
Alliance <--Synonym--> League <--RelatedTo--> Division <--RelatedTo--> Operator --IsA--> Businessman 
Welcome <--Antonym--> Thank <--RelatedTo--> Reward --IsA--> Blessing 