New words - Retronyms

a retronym is a word that is created because of a change in something else... for example:

an acoustic guitar...it was a guitar until the advent of the electric guitar...
george h.w. bush ... who used to just be george bush until dubya
standard transmission (thanks shannon)
rotary phone
dial up internet
print journalist
coke classic
silent movie
propeller airplane
whole milk

i'm trying to find one that's just one word...i think "mustang" for a wild horse, but shannon says it's a breed of horse unique to the american plains...

so, help me find another