Camina vs Comida
I found this a struggle to remember the difference, I just realised... cAmina = wAlk, cOmida = fOod. Hope that helps someone.
:P in an easy way: comida comes from the verb comer, and camina is a conjugation from caminar in present...
Also remember that "El Camino" is the name of a car. So just imagine a car breaking down and then you have to walk. lol