I( think they are called scuta

These are the possible scrabble words:

scuta

acts

cast

cats

cuts

scat

scut

taus

utas

act

cat

cut

sac

sat

sau

tas

tau

uta

uts

as

at

ta

us

ut

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -CU-A. That is, five letter words with 2nd letter C and 3rd letter U and 5th letter A. In alphabetical order, they are:

scuba

scuta

Scutum (pronounced /'skjuːtəm/ in English; pl. scuta) is the Latin word for "shield", although it has in modern times come to be specifically associated with the rectangular, semi-cylindrical body shield carried by ancient Roman legionaries. The shield's curved shape covered the wielder's front and sides, affording excellent protection.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -C-TA. That is, five letter words with 2nd letter C and 4th letter T and 5th letter A. In alphabetical order, they are:

aceta

scuta