堡塁: fort, stronghold

貝類: shellfish

nigorobuna (Carassius auratus grandoculis), a type of 鮒 (funa, “crucian carp”), an edible freshwater ray-finned fish related to carp and goldfish, endemic to Lake Biwa in Japan

calendar / era

take place, past, history

the Gregorian calendar

history (record or narrative description of past events) / a person's background, career, or personal history

(geology) conglomerate

revision of the calendar (e.g. from lunar to solar) / change of calendar at the start of the year

revise the calendar / change the calendar at the start of the year