Letters that make cars
s, a, c, r
are letters that make 'cars'
Words within cars
ar, ars, car, AR, CA, Ar, Ca
are words within 'cars'
Anagrams of cars
scar, arcs
are anagrams of 'cars'
Words created by adding a letter to the beginning or end of cars
carse, scars
are words created by adding a letter to 'cars'