Identify the word that remains the same in plural form.

কতগুলো শব্দ আছে যাদের singular এবং plural form একই রকম থাকে। যেমন- – Dice, – Sheep, – Pice, – Deer, – Score, – Swine, – Canon, – Corps, – Offspring, – Series, – Carp, – Cod, – Pair, – Dozen, – Species, – Aircraft, – Pike, – Hovercraft, – Spacecraft, – Public, – Pair, – Gross, – Hundred, – Thousand, – Million ইত্যাদি।