 
  
  
  
  
  
  
  
  
   
  
CORE WORDS
 
  
  COMPOUND WORDS 
inability | {n} | (lack of the ability to do something; incapability) | maintainability | {n} | (ease with which something can be maintained) | sustainability | {n} | (ability to sustain something) | sustainability | {n} | (ecological sense) 
   5000 WORDS 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   PHRASES
  
 |