本箱|ほんばこhonbako[1]atamadaka (head-high)

1. nounbookcase
   私の本箱ほんばこは大おおきな辞書じしょが入はいる奥行おくゆきがある。↗

   My bookcase is deep enough to take large dictionaries.

• Synonym本棚ほんだなNeutralThe everyday word for a bookshelf or bookcase; covers both open shelves and those with doors, while 「本箱」 usually means a box-style cabinet with doors.
• Synonym書棚しょだなWrittenA written, rather formal word for a bookshelf; synonymous with 「本棚」.
• Synonym書架しょかWrittenA written, technical term for bookshelves such as those in libraries, as in 「開架式書架」.
• SynonymブックケースNeutralA loanword for a bookcase; it can also mean the outer slipcase of a book. The word is not often used.

For everyday use, say 「本棚」. Use 「本箱」 for a box-style bookcase with doors, though it sounds a bit old-fashioned. 「書架」 is the written term for library shelves; 「書棚」 is a formal written synonym of 「本棚」, and 「ブックケース」 is a rare loanword.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 書籍しょせきを収納しゅうのうするための戸とや棚たながついた家具かぐ。