問題集（もんだいしゅう、mondaishuu）
- workbook

The Japanese word 問題集 （もんだいしゅう） refers to a collection of problems, exercises, or questions, typically used for practice and study. It's a very common term, especially in an educational context, but can also apply to other situations where there are sets of questions to be answered. Essentially, a 問題集 is a workbook or compilation designed to help someone learn or test their understanding of a particular subject.

⚫︎ 数学の問題集 Translation: Math workbook/problem set ⚫︎ 日本語の問題集で勉強する Translation: To study using a Japanese language problem set. ⚫︎ 試験対策用の問題集を買った Translation: I bought a problem set for exam preparation.

You use 問題集 when referring to a book or document containing exercises, practice questions, or problems. It's commonly used when discussing study materials, exam preparation, or any situation where a series of questions needs to be addressed for learning purposes. It's suitable for various subjects and skill levels. You can use it to describe the type of book or the act of using one.

問題集 is written using kanji and hiragana. ・ 問題 (もんだい) means "problem" or "question." ・ 集 (しゅう) means "collection" or "set." There are no other common ways to write this word, and the okurigana (suffix hiragana) is standard. The reading is always もんだいしゅう.

⚫︎ ドリル (doriru): Drill (a collection of repetitive exercises) ⚫︎ ワークブック (wākubukku): Workbook ⚫︎ 練習問題 (れんしゅうもんだい): Practice problems/exercises ⚫︎ 問題 (もんだい): Problem (can sometimes be used to refer to a 問題集 depending on context, but generally refers to a single question) ⚫︎ 参考書 (さんこうしょ): Reference book (can sometimes contain 問題集 sections)

There aren't direct antonyms for 問題集, as it is a noun referring to a type of material. However, words related to not studying or not practicing could be considered indirect antonyms. ・ 教科書 (きょうかしょ): Textbook ・ 解説 (かいせつ): Explanation/Commentary

新しい日本語の問題集は分かりやすくて、とても役に立ちます。 ・Translation: The new Japanese language problem set is easy to understand and very helpful. ・Explanation: This sentence describes the usefulness of a 問題集 for language learning.

試験前にたくさんの問題集を解いて、練習しました。 ・Translation: I solved many problem sets before the exam and practiced. ・Explanation: This sentence explains the action taken to prepare for a test by using many 問題集.

The word 問題 itself comes from Chinese. 問 means "to ask" and 題 means "topic" or "subject." 集 also comes from Chinese and signifies "to gather" or "collect." Therefore, 問題集 literally means "a collection of problems."