Injure is the opposite of Preserve. Preserve is a synonym of Keep. Keep is related to Lock. 
Judge is related to Profession. Profession is related to Doctor. Doctor can be used for Diagnose. 
Injure <--Antonym--> Preserve <--Synonym--> Keep <--RelatedTo--> Lock 
Judge <--RelatedTo--> Profession <--RelatedTo--> Doctor --UsedFor--> Diagnose 