The word “two” is a common numeral adjective. Examples include phrases like “two apples” or “two birds.” It modifies a noun by specifying a quantity of precisely two.
Numeral adjectives are fundamental to language, providing a means of quantifying objects and concepts. The concept of “two,” specifically, is essential for basic counting, comparison, and numerous mathematical operations. Its historical usage spans millennia, from early numerical systems to modern mathematics and everyday conversation.