合作: collaboration

合作:する: to collaborate

to adore, to be sweet on / (ironically, from the idea of giving special attention to) to persistently bother or annoy someone, to be a noodge to someone

(dialect, Tsugaru) water

(dialect, Tsugaru, Akita) pickle

(Kansai, Gunma, Ibaraki, Akita) school

the molted exoskeleton of an insect or crustacean, exuvia; moult / hollowed remains (in general)

月日: date (month and day)

足軽: an ashigaru, a type of foot soldier in feudal Japan

津軽: Tsugaru (a region comprising the western half of Aomori Prefecture) / Tsugaru (a city in Aomori Prefecture, Japan)