“CAROACH” is a valid word. — 14 points Scrabble

coach(sports) someone in charge of training an athlete or a team
roacha roll of hair brushed back from the forehead
cacaotropical American tree producing cacao beans
orachany of various herbaceous plants of the genus Atriplex that thrive in deserts and salt marshes

archa curved shape in the vertical plane that spans an opening
chao
chara charred substance
cocaa South American shrub whose leaves are chewed by natives of the Andes; a source of cocaine
croc
hora
orcapredatory black-and-white toothed whale with large dorsal fin; common in cold seas
caca
arco(of instruments in the violin family) to be played with the bow
hoarice crystals forming a white deposit (especially on objects outside)
haar

cara motor vehicle with four wheels; usually propelled by an internal combustion engine
aahexpress admiration and pleasure by uttering `ooh' or `aah'
aha
arcelectrical conduction through a gas in an applied electric field
cor
rah
hao10 hao equal 1 dong in Vietnam
oaran implement used to propel or steer a boat
rocmythical bird of prey having enormous size and strength
oraa mouth or mouthlike opening
rhothe 17th letter of the Greek alphabet
orc
ocaSouth American wood sorrel cultivated for its edible tubers

oha midwestern state in north central United States in the Great Lakes region
ora state in northwestern United States on the Pacific
ah
ha(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day
hoa trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds
ara colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
aaa dry form of lava resembling clinkers

CAROACH