1 Material and labor for a wood retaining wall runs approximately $20-$25 a square face foot (and there's usually a minimum charge for small projects), which would be about $1,000-$1,300 for a 50-square-face-foot wall. Materials and installation for a stone retaining wall start around $25-$40 a square face foot and go up depending on materials, site conditions, and other factors.
MFWD (mechanical front wheel drive) or front wheel assist tractors generally have smaller tires on the front and the front axle can be mechanically disconnected from the rest of the powertrain in some manner or another.
Fwd is front wheel drive rwd is rear wheel drive awd is all wheel drive and 4wd is 4 wheel drive. if you want to drive in a city I would say rwd or awd is better. the only difference between 4wd and awd is if you have a car with more than 4 wheels.