Both guitar and bass are plucked instruments, but they are very different in terms of appearance, range, timbre, use, etc.
Appearance
Guitars usually have six strings, a short neck, a smaller body, and a variety of body shapes, such as electric guitars, acoustic guitars, ukuleles, etc.
Basses usually have four strings, a longer neck, a larger body, and a more uniform body shape, mostly wooden.
Vocal range
The vocal range of the guitar is usually e2-e6 (e1-e5 for bass guitars) and the pitch is higher.
The bass usually has an e1-e4 range and a lower pitch.
Timbre
The tone of a guitar is usually bright and crisp.
The bass usually has a deeper, deeper tone.
Uses:
Guitars are usually used to play melodies and can also be used to play harmonies.
Bass is often used to play bass, providing support for the rhythm and stability of the bass.
Positioning in the band
The guitar is usually the main instrument in a band and is responsible for playing the main melody and harmony.
The bass is usually the backing instrument in the band and is responsible for playing the bass.
Overall, both the guitar and the bass are important instruments that play different roles in **. Guitars are often used to play melodies and harmonies, while basses are used to play bass.