年鑑 (nenkan) means “yearbook” | MotiTan Japanese Dictionary

More examples

地域の歴史を知るために、古い年鑑を調べました。chi iki no reki shi o shi ru ta me ni furu i nen kan o shira be ma shi ta

I consulted an old yearbook to learn about the history of the area.

It serves as a reference book that collects and records information from a specific year.

年報nenpō: A report containing the main records and results of an organization or activity for one year.

一年ごとの出来事や資料を集めて記録した本。ichi nen go to no de ki goto ya shi ryō o atsu me te ki roku shi ta hon

年鑑 (nenkan) is formed from 年 (nen, "year") and 鑑 (kan, "reference book"), so its structure describes a reference book organized around a year.

The English noun annual can also refer to a publication released once a year, but yearbook more often suggests a school record, which helps distinguish these uses of 年鑑 (nenkan).