suffix
register; record book
Suffix used in compound nouns to indicate a book or register for official records, accounts, or lists. Common in words like 名簿 (name register) and 家計簿 (household account book).
会員名簿に名前を追加した。
I added my name to the membership register.
家計簿をつけるのは節約に役立つ。
Keeping a household account book helps with saving money.