The corn cob is the word you're looking for by changing one letter in the word mob.
cob
Corn Coon Coop Chop Shop
what word can you make by changing one letter in the word winter
an ear of corn
The root word "corn" comes from the Old English word "corn," which originally meant any kind of grain or seed. Over time, the meaning of "corn" narrowed to specifically refer to the cereal crop known as maize in the United States and Canada.
corn (as the base for corn syrup)
corn
ear
ear
Pone (although it is more commonly called corn pone).
Maize.
· Indian corn · Indians