辞じ書しょ部ぶ門もん

Meanings

1

noun

Refers to the vocabulary component of a language, often in linguistic or computational contexts. Not a physical dictionary.

gate, counter for cannons

辞じ書しょ
辞書 means 'dictionary' (a reference book), while 辞書部門 refers to the abstract set of words (lexicon) of a language.
語ご彙い
語彙 is the common word for 'vocabulary' or 'lexicon'. 辞書部門 is a more technical term used in linguistics.

Compound of 辞書 (dictionary) and 部門 (division, category). The term is a calque from English 'lexicon' in its linguistic sense.