“OGHAM” is a valid word. — 11 points Scrabble

agogone by; or in the past
hammeat cut from the thigh of a hog (usually smoked)
goaa state of southwestern India; a former Portuguese colony
hoga person regarded as greedy and pig-like
hagan ugly evil-looking old woman
maga periodic publication containing pictures and stories and articles of interest to those who purchase it or subscribe to it
hao10 hao equal 1 dong in Vietnam
ohma unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere
gama herd of whales
moaextinct flightless bird of New Zealand
mog
mhoa unit of conductance equal to the reciprocal of an ohm

goa time for working (after which you will be relieved by someone else)
oha midwestern state in north central United States in the Great Lakes region
ama radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
ah
mainformal terms for a mother
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
hma metric unit of length equal to 100 meters
moan indefinitely short time
om
aga soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography

OGHAM