modification in WordNet English dictionary

1. the act of making something different (as e.g. the size of a garment)
   alteration  modification  adjustment 
   
2. an event that occurs when something passes from one state or phase to another
   "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"
   change  alteration  modification 
   
3. the grammatical relation that exists when a word qualifies the meaning of the phrase
   modification  qualifying  limiting 
   
4. slightly modified copy; not an exact copy
   "a modification of last year's model"
   modification