Step is a type of Support. Step is a type of Block. Block is a synonym of Forget. 
Bold is the opposite of Shy. Shy is a synonym of Throw. Throw is the opposite of Swallow. 
Support <--IsA-- Step --IsA--> Block <--Synonym--> Forget 
Bold <--Antonym--> Shy <--Synonym--> Throw <--Antonym--> Swallow 