Answer:
R&B and rock share almost the same ideas and they have very subtle differences in their music.
Instruments, such as the lead guitar, piano, and the rhythm section are the same in both genres.
R&B originates mainly from African-American folk music and various African musical traditions, often referred to as the blues. It is highly influenced by gospel and other religious hymns and songs, and it incorporates elements of daily life and field work such as hollers, shouts, and similar sound effects. Use of traditional instruments such as trumpets, saxophones, and trombones are noticeable.
On the other hand, rock music is mostly dependent on electric musical instruments and extreme sound amplification. Use of instruments such as the electric guitar, electric bass, and drums are common.
R&B also uses mid-tempo and slow-tempo pieces, while using expanded harmonic palettes of jazz chords. It also uses embellishments and florid melisma in their singing style. Rock, on the other hand, is more straightforward and narrative in singing style, with heavy incessant beats.
Step-by-step explanation: