Crop is related to Result. Result is related to Damage. Damage is related to Harm. Harm is a synonym of Injury. 
Alter is a synonym of Affect. Stimulate is a type of Affect. Stimulate is a synonym of Stir. 
Crop <--RelatedTo--> Result <--RelatedTo--> Damage <--RelatedTo--> Harm <--Synonym--> Injury 
Alter <--Synonym--> Affect <--IsA-- Stimulate <--Synonym--> Stir 