S: (n) sheet, tack, mainsheet, weather sheet, shroud ((nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind)
S: (v) change by reversal, turn, reverse (change to the contrary) "The trend was reversed"; "the tides turned against him"; "public opinion turned when it was revealed that the president had an affair with a White House intern"
S: (v) metamorphose, transfigure, transmogrify (change completely the nature or appearance of) "In Kafka's story, a person metamorphoses into a bug"; "The treatment and diet transfigured her into a beautiful young woman"; "Jesus was transfigured after his resurrection"
W: (n) tack [Related to: tack] ((nautical) the act of changing tack)
W: (n) switch [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 [Related to: switch] (the act of changing one thing or position for another) "his switch on abortion cost him the election"