There are Triple Bongos too which the 3rd Bongo is what we call the Bebe Quinto, (the Fifth pitched Baby) cause it's the son/daughter of the mom & dad.
I kinda think of the Congas as being the bass guitar of a combo; deep, resonant, and melodic. The rhythm is and needs to be a constant time keeper. Flash is kept to a minimum. Bongos are soloist color. Listen to combinations of both types of drums in compositions. Music like Mambo. When Perez Prado's orchestra plays, the conga is keeping the steady driving time, even if it is muted. The bongos are out front playing a more complex colorful rhythm. Bridging the two are the sharp accents of the cascara and bajo of the timbal with that bright block or cowbell accent. Wow, I love this music, it can definitely take control of you and send you on a voyage.
lol! my favorite bass Afro Cuban instrument has to be the Marimbula though, there's an artist in Miami who gets great tones out of them lemme get a link to this super cool instrument ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qJpGCoZ4dts.htmlsi=dOrAqIHzxpw-Xg4q CC is English! Cheers!
Quinto and Tumba is okay but another one isn't conga.. it's called a Tres Dos or Tres Golpes, a part or a kit of whole set of conga! Tumba is also known as a Tumbador or Salidor!