foodstuff

As a noun foodstuff

is an instance of material which may be used as food.

As an adjective antimeat is

opposing the use of meat as a foodstuff; stridently vegetarian or vegan.

As nouns the difference between foodstuff and misfeed

is that foodstuff is an instance of material which may be used as food while misfeed is a fault in a mechanical feed mechanism (in the paper pick-up of a printer, for example).

As a verb misfeed is

to feed incorrectly, as for example with the wrong foodstuff.