ART - Human effort to imitate, supplement, alter, or counteract the work of nature.
OAR - An implement used to propel a boat or a ship in the water, having a flat blade at one end, being rowed from the other end and being normally fastened to the vessel.
PAR - By; with.
PAT - The sound of a light slap or tap with a soft flat object, especially of a footstep.
PRO - An advantage of something, especially when contrasted with its disadvantages (cons).
RAT - A medium-sized rodent belonging to the genus Rattus.
ROT - To suffer decomposition due to biological action, especially by fungi or bacteria.
TAR - A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
TOP - That part of an object furthest away in the opposite direction from that in which an unsupported object would fall.
APT - Suitable; appropriate; fit or fitted; suited.
OPT - To choose; to select.
OAT - Widely cultivated cereal grass, typically Avena sativa.
PART - A fraction of a whole; a portion.
PORT - A place on the coast at which ships can shelter, or dock to load and unload cargo or passengers.
ROAR - To make a loud, deep cry, especially from pain, anger, or other strong emotion.
TARP - Short form of tarpaulin.
TRAP - A machine or other device designed to catch (and sometimes kill) animals, either by holding them in a container, or by catching hold of part of the body.
RAPT - Snatched, taken away; abducted.
PARROT - A kind of bird, many species of which are colourful and able to mimic human speech.
RAPTOR - A bird of prey.