The term 'drum type' refers to four different types of drums: BASS, SNARE, BONGO, and tomtom. BASS drums are the largest and lowest-pitched drums, usually played with a pedal. SNARE drums are medium-sized drums that produce a sharp, distinct sound when struck. BONGO drums are small, two-headed drums that are often used in Latin music. Tomtoms are medium-sized drums with a single head, usually used in rock and pop music.