The word ngoma (variants: ngomo, engoma, ingoma) is a Bantu cognate — inherited from Proto-Bantu, spoken in eastern Nigeria and western Cameroon roughly 3,000–5,000 years ago.
As Bantu-speaking peoples expanded south and east across sub-Saharan Africa, they carried their word for drum with them. Today, over 200 languages across Central, East, and Southern Africa share some form of *ngoma — one of the most geographically widespread instrument words on Earth.
The shaded region shows the Niger-Congo language family in West and Central Africa — the broader family containing Bantu. The ngom- root is densest in the Bantu branch, sweeping from Cameroon through the Congo Basin and outward.