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"
W: (n) plane [Related to: plane] (a carpenter's hand tool with an adjustable blade for smoothing or shaping wood) "the cabinetmaker used a plane for the finish work"