Here's why:
* Banjo: This word comes from the Bantu language, specifically the Kikongo word "mbanza."
* Voodoo: This word originates from the West African Dahomey (now Benin) word "vodun."
* Gumbo: This word is derived from the West African word "ngombo" or "kigombo," which refers to a type of okra.
* Drum: This word has its roots in Old English, deriving from the Proto-Germanic word "trumma," which means "drum."
Let me know if you'd like to try another word puzzle!