せつぞくし接続詞setsuzokushi
1.
A grammatical function that links words, phrases, or clauses in a sentence, enabling the expression of complex ideas or relationships between elements.
2.
A type of word employed in language that serves to connect parts of a sentence, illustrating various logical relationships such as addition, contrast, or choice among the connected elements.
3.
A part of speech that acts independently, with no inflection, specifically designed to unify sentences or phrases, allowing for smoother transitions in spoken or written communication.
Example:
関係代名詞は「接続詞+代名詞」のはたらきをしています。