ORE - Rock that contains utilitarian materials; primarily a rock containing metals or gems which (at the time of the rock's evaluation and proposal for extraction) are able to be separated from its neighboring minerals and processed at a cost that does not exceed those materials' present-day economic values.
RED - Having red as its colour.
ROD - A straight, round stick, shaft, bar, cane, or staff.
DOE - A female deer; also used of similar animals such as reindeer, antelope, goat.
ERR - To make a mistake.
ODE - A short poetical composition proper to be set to music or sung; a lyric poem; esp., now, a poem characterized by sustained noble sentiment and appropriate dignity of style.
CODE - A short symbol, often with little relation to the item it represents.
CORD - A long, thin, flexible length of twisted yarns (strands) of fiber.
CORE - The central part of fruit, containing the kernels or seeds.
RODE - The line from the vessel to its anchor. Also warp.
COED - Alternative spelling of co-ed.
REDO - To do again.
DOER - Someone who does, performs, or executes; an active person, an agent.
CODER - A device that generates a code, often as a series of pulses.
ORDER - Arrangement, disposition, sequence.
DECOR - The style of decoration of a room, building.
CORED - Simple past tense and past participle of core.
CREDO - A belief system.
RECORD - An item of information put into a temporary or permanent physical medium.