Acoustic bass guitar<>double bass
Double bass is a violin like thingy, but then an awfull lot bigger. doublesized Chello.
Acoustic bass guitar== Acoustic guitar, but missing 2 strings and tuned an octave lower. It wasn't easy to find one of these in a reasonable priceclass, but I lucked out bigtime with one that has a good sound, but was only 180 euro's. (200USD, I think.) We put some decent quality strings on it and she plays great. The strings are a bit heavy to push in right, though. There isn't an electric element, but there is an internal mic and a jack out for playing in a band.
I'm not all that much of a fan of electric guitars. I generally prefer acoustics and slower music. Mind, most of the stuff I listen to contains electric guitars, but it doesn't seem to beat an acoustic for solo playing or for slower music.