Short words:
* car
* cars
* scar
* scor (archaic word for a score)
* or
* as
* so
* co (abbreviation for company)
* ar (abbreviation for area)
* s
* o
Longer words:
* scour
* roar
* saro (a type of fabric)
* acro (abbreviation for acropolis)
Let me know if you'd like me to try and find any more!