1. 
   Change of leg or lead
   Change of the leading legs at the canter or lope
   Found op http://www.gaitedhorses.net/Articles/HorseGlossary.html
   
   
2. 
   Change-ad
   Change-ad is a branded envelope used for advertising products. It is used by drive-thru employees by putting customer`s change inside these envelopes to prevent it from dropping. Change-ad envelopes feature brands such as Netflix, Jiffy Lube, Blockbuster, Tide etc. Used mainly in southern Californi...
   Found op http://en.wikipedia.org/wiki/Change-ad
   
   

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