union / (science fiction, of robots) combining together and becoming a new, stronger robot / (euphemistic) sex

to unite, to coalesce / (science fiction, of robots) to combine together and become a new, stronger robot / (euphemistic) to have sex

Galicia

lesson, schoolwork

hungry wolf

Alternative spelling of 餓鬼: (pejorative, slang) an unpleasant child, a brat

Bengal

(Internet slang, onomatopoeia) An expression of pain after being hit on the head; the traditional response to ぬるぽ.

gallon

a region comprising the western half of Aomori Prefecture / Alternative spelling of つがる (Tsugaru): a city within that region