I know someone who says it should be a goal to learn something new every day.
So, in that spirit, and thanks to the Laurie Berkner/"Farm Song"-related clarifications of Deb in SF and Katy L, here you go (thanks, Wikipedia!):
Bongo drum: Percussion instrument made up of two small drums attached to each other
Conga: Tall, narrow, single-headed Cuban drum of African origin, probably derived from the Congolese Makuta drums.
This is my favorite factoid: "Someone who plays the bongos is called a bongocero." "Bongocero" sounds cooler than "conguero."
Bongocero. It's my new favorite word.