NUT - A hard-shelled seed.
RUN - Act or instance of running, of moving rapidly using the feet.
RUT - Sexual desire or oestrus of cattle, and various other mammals.
URN - A vase with a footed base.
RUE - Repentance, regret.
RENT - A payment made by a tenant at intervals in order to occupy a property.
TRUE - Conforming to the actual state of reality or fact; factually correct.
TUNE - A melody.
TURN - Of a body, person, etc, to move around an axis through itself.
RUNT - The smallest animal of a litter.
TERN - Any of various sea birds of the family Sternidae that are similar to gulls but are smaller, more elegant and have a forked tail.
RUNE - A letter, or character, belonging to the written language of various ancient Germanic peoples, especially the Scandinavians and the Anglo-Saxons.
TUNER - A person who tunes a piano.
UNTRUE - False; not true.