Core. It sounds the same, but it is a completely different word.
        
             
        
        
        
Answer:
[See Below]
Explanation:
Malicious uses Mal and it means intending to do wrong.  
 
        
             
        
        
        
A verb is a word that describes action
        
                    
             
        
        
        
In "The Veldt", Bradbury's message is that allowing technology to parent our children has negative consequences.