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 - Leaf.

• Leaf (Noun):
- English meaning: A flat green part of a plant, growing from a stem or branch or from the root.
- Bangla meaning: পাতা; পত্র; পল্লব।

• Leaf শব্দটি একটি irregular noun, যার একবচনের শেষে -f থাকে। যখন এ ধরনের শব্দের বহুবচন তৈরি করা হয়, তখন সাধারণত -f বদলে -ves বসে। leafs শব্দটিও plural হিসেবে ব্যবহার করা যায়।

• Leaf এর plural form → Leaves, leafs.

• কতগুলো word আছে যাদের singular এবং plural form একই থাকে। যেমন:
- 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.