To facilitate the understanding of these concepts, we shall utilize language that is familiar to everyone. The aggregate of form in Buddhism refers principally to the body and external objects; the aggregates of feeling, perception, volition, and consciousness refer primarily to the mind, and the activities of the body, matter, and mind. The aggregate of form shall first be explained.

~Depicted from THE FOUR SEALS OF DHARMA - The Practice of Realizing Emptiness