Before "foot":
* Barefoot: walking without shoes
* Left foot: the foot on the left side of your body
* Running foot: a fast pace of walking
* Square foot: a unit of area measurement
After "foot":
* Footprint: the mark left by a foot
* Football: a sport played with a ball
* Footpath: a narrow path for walking
* Footstool: a small stool used for resting one's feet
Let me know if you have a specific context in mind, and I can help you find the perfect word!