BUN - A small bread roll, often sweetened or spiced.
BUT - Outside of.
NOT - Negates the meaning of the modified verb.
NUT - A hard-shelled seed.
OUT - Away from home or one's usual place, or not indoors.
TON - A unit of weight (mass) equal to 2240 pounds (a long ton) or 2000 pounds (a short ton) or 1000 kilograms (a metric ton).
TUB - A flat-bottomed vessel, of width similar to or greater than its height, used for storing or packing things, or for washing things in.
NUB - The innermost section of a chrysalis in a silk cocoon.
BOT - The larva of a bot fly, which infests the skin of various mammals, producing warbles, or the nasal passage of sheep, or the stomach of horses.
TOT - A small child.
BOUT - A period of something, usually painful or unpleasant.
BUNT - The middle part, cavity, or belly of a sail; the part of a furled sail which is at the center of the yard.
UNTO - Up to the time or degree that; until; till.
TOUT - Someone advertising for customers in an aggressive way.
BUTT - The buttocks; used as a euphemism.
BUTTON - A mechanical device meant to be pressed with a finger in order to open or close an electric circuit or to activate a mechanism.