What is two peas in a pod?

"Two peas in a pod" is an idiomatic expression used in English to describe two people or things that are very similar, closely related, or nearly identical in characteristics, appearance, or behavior. The phrase draws its imagery from the way peas, which are identical and nestled closely together, appear inside a pod. This expression is often used to emphasize a strong bond or likeness between individuals, such as close friends, siblings, or couples who share many traits or preferences. It's often used in a positive context to highlight harmony or camaraderie between the paired subjects.