Open English Wordnet
Nouns
(n)alteration, modification, adjustmentthe act of making something different (as e.g. the size of a garment)
(n)modification, qualifying, limitingthe grammatical relation that exists when a word qualifies the meaning of the phrase
(n)change, alteration, modificationan 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”