Become is related to Be. Swing is a type of Be. Swing is a synonym of Sweep. Sweep is a synonym of Slam. 
Employ is related to Have. Have is a synonym of Appear. Appear is related to Hear. 
Become <--RelatedTo--> Be <--IsA-- Swing <--Synonym--> Sweep <--Synonym--> Slam 
Employ <--RelatedTo--> Have <--Synonym--> Appear <--RelatedTo--> Hear 