Select the word that doesn't remain the same in the plural form:

• The word that doesn't remain the same in the plural form is - Self.

• Self:
- English meaning: The type of person you are, especially the way you normally behave, look or feel.
- Bangla meaning: ব্যক্তিপ্রকৃতি; স্বকীয় ব্যক্তিত্ব; অহং; আত্মপ্রকৃতি; সত্তা; আত্মতা; স্বকীয়তা; স্বরূপ।

- Self এর plural form: Selves.

• কতগুলো word আছে যাদের singular এবং plural form একই থাকে। যেমন:
- Deer - There is one deer, and there are many deer.
- Sheep - There is one sheep, and there are many sheep.
- Swine - There is one swine, and there are many swine.
- Corps - Marine Corps, Several corps from different countries participated in the exercise.
- Aircraft - There is one aircraft, and there are many aircraft.
- Spacecraft - There is one spacecraft, and there are many spacecraft.

Source: Accessible Dictionary by Bangla Academy, Merriam-Webster Dictionary.