S: (v) change (change%2:30:00::) (undergo a change; become different in essence; losing one's or its original nature) "She changed completely as she grew older"; "The weather changed last night"
W: (n) switch (switch%1:11:00::) [Related to: switch] (an event in which one thing is substituted for another) "the replacement of lost blood by a transfusion of donor blood"
W: (n) switch (switch%1:04:00::) [Related to: switch] (the act of changing one thing or position for another) "his switch on abortion cost him the election"