Stupid is similar to Weak. Weak is a synonym of Faint. Faint is related to Fall. 
Stable is related to Farm. Farm is related to Vegetable. Vegetable is a type of Produce. Produce is related to General. 
Stupid <--SimilarTo--> Weak <--Synonym--> Faint <--RelatedTo--> Fall 
Stable <--RelatedTo--> Farm <--RelatedTo--> Vegetable --IsA--> Produce <--RelatedTo--> General 