Interest is similar to Principal. Principal is a synonym of Star. 
Band is the opposite of Act. Act is related to Laugh. Laugh is related to Effect. Effect is related to Shade. 
Interest <--SimilarTo--> Principal <--Synonym--> Star 
Band <--Antonym--> Act <--RelatedTo--> Laugh <--RelatedTo--> Effect <--RelatedTo--> Shade 