CON - To study, especially in order to gain knowledge of.
ION - An atom or group of atoms bearing an electrical charge such as the sodium and chlorine atoms in a salt solution.
ONE - A numerical value equal to 1; the first number in the set of natural numbers (especially in number theory); the cardinality of the smallest nonempty set. Ordinal: first.
VIE - To rival; to struggle for superiority; to contend; to compete eagerly so as to gain something.
COIN - A piece of currency, usually metallic and in the shape of a disc, but sometimes polygonal, or with a hole in the middle.
CONE - A surface of revolution formed by rotating a segment of a line around another line that intersects the first line.
COVE - A fellow; a man.
ICON - An image, symbol, picture, or other representation usually as an object of religious devotion.
NICE - Nicely.
ONCE - One and only one time.
OVEN - A chamber used for baking or heating.
VEIN - A blood vessel that transports blood from the capillaries back to the heart.
VICE - A bad habit.
VINE - The climbing plant that produces grapes.
VINO - The Italian or Spanish word for wine used in combination in various terms adopted from these languages (see Derived terms below).
VOICE - Sound uttered by the mouth, especially that uttered by human beings in speech or song; steven; sound thus uttered considered as possessing some special quality or character; as, the human voice; a pleasant voice; a low voice.
COVEN - A clique that shares common interests or activities.
NOVICE - A new member of a religious order accepted on a conditional basis, prior to confirmation.