Japanese can be confusing when counting pretty much anything. That's because Japanese uses 'counters'; some lists go as far as 500 of them. My list is based on : https://www.tofugu.com/japanese/japanese-counters-list/ which lists and illustrates 350 of them. I 'just' put their list on Anki with voiced iteration generated with https://soundoftext.com/. A good article to help you handle counting is : https://www.tofugu.com/japanese/counting-in-japanese/
If Tofugu asks to remove the deck, I will.
Have fun !
| Counter | 団 |
| * | |
| Reading | だん |
| Frequency | Somewhat-Common |
| Usage | Orchestras, travelers, students, fellowships, troops, theatrical troupes, acting troupes, etc. |
| Sound | |
| Example-Jap | 運悪く、観光客の1団と出くわしてしまった。 |
| Example-Eng | Unfortunately, I ran into a group of tourists. |
| Counter | 畳 |
| * | |
| Reading | じょう |
| Frequency | Somewhat-Common |
| Usage | Tatami, tatami mats. |
| Sound | |
| Example-Jap | この部屋の広さって、10畳ぐらいですか？ |
| Example-Eng | The size of this room is… what, about ten tatami mats? |
| Counter | 次 |
| * | |
| Reading | じ |
| Frequency | Somewhat-Common |
| Usage | An ordinal number suffix usually combined with the ordinal number prefix 第 (だい), 次 expresses the order of events. |
| Sound | |
| Example-Jap | これは第２次世界大戦の時の写真です。 |
| Example-Eng | These are photos from World War II. |