NOT - Negates the meaning of the modified verb.
NOW - Present; current.
NUT - A hard-shelled seed.
OUT - Away from home or one's usual place, or not indoors.
OWN - To have rightful possession of (property, goods or capital); "To possess by right; to have the right of property in; to have the legal right or rightful title to." (Ref 1).
POT - A vessel used for cooking or storing food.
PUT - To place something somewhere.
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).
TOP - That part of an object furthest away in the opposite direction from that in which an unsupported object would fall.
TOW - To pull something behind one using a line or chain; to haul.
TWO - Describing a set or group with two components.
WON - Simple past tense and past participle of win.
OPT - To choose; to select.
POW - Represents the sound of a violent impact, such as a punch.
PUN - To beat; strike with force; ram; pound, as in a mortar; reduce to powder.
PUNT - A pontoon; a narrow shallow boat propelled by a pole.
TOWN - A settlement; an area with residential districts, shops and amenities, and its own local government; especially one larger than a village and smaller than a city.
UPON - Being above and in contact with another.
UNTO - Up to the time or degree that; until; till.
UPTOWN - The residential part of a city, away from the commercial center.