S: (n) improvement (the act of improving something) "their improvements increased the value of the property"
S: (n) change of state (the act of changing something into something different in essential characteristics)
S: (n) change (the action of changing something) "the change of government had no impact on the economy"; "his change on abortion cost him the election"
S: (n) action (something done (usually as opposed to something said)) "there were stories of murders and other unnatural actions"
S: (v) rectify, remediate, remedy, repair, amend (set straight or right) "remedy these deficiencies"; "rectify the inequities in salaries"; "repair an oversight"
S: (v) remedy, relieve (provide relief for) "remedy his illness"