Paiks refer to ancient Indian soldiers who used to fight on foot. There are numerous synonyms for paiks, such as infantrymen, foot soldiers, ground troops, and footmen. These terms are often used interchangeably in literature and history books. However, there are subtle differences between these synonyms. Infantrymen refer to soldiers who are trained to fight on foot with firearms, whereas foot soldiers refer to soldiers who fight on the ground without any vehicles or aircraft. Similarly, ground troops refer to soldiers who fight on the ground regardless of the mode of transportation, whereas footmen refer to soldiers who walk on foot and do not ride horses or other animals.