“KATAKANA” is a valid word. — 16 points Scrabble

tankaa form of Japanese poetry; the 1st and 3rd lines have five syllables and the 2nd, 4th, and 5th have seven syllables

tankan enclosed armored military vehicle; has a cannon and moves on caterpillar treads
kana
takathe basic unit of money in Bangladesh; equal to 100 paisa
kata
kaka
anta

anamother of the ancient Irish gods; sometimes identified with Danu
tana browning of the skin resulting from exposure to the rays of the sun
katthe leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant
antsocial insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
anan associate degree in nursing
naa silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
kaunknown god; an epithet of Prajapati and Brahma
aaa dry form of lava resembling clinkers

KATAKANA