What are the meanings of music genres line hip-hop, reagge,jazz,R&B,pop,rock,heavy metal etc?

SOFT ROCK - songs with soft guitaring and drum beats

HIP-HOP- music with lots of bass and rap e.g. all rappers like eminem ,50 cent,etc.

HEAVY METAL - music or noise created by a virtuoso guitar player who is generally a drug addict and spoiled brat but still it's good e.g. metallica, guns and roses

R & B - it was mainly created by black americans in late 1940's e.g. justin timberlake ,jenifer lopez,beyonce,whitney houston

REGGAE - contemporary music developed in jamaica e.g.bob marley, jimmy cliff

POP -commercial music

Think of music as a language. And each style of music uses melodies and rhythms to speak to people in different languages.

The categories are as widespread as the languages we speak. Even in the U.S. we all speak English but we have different dialects. From southern accents to midwestern to areas like NY/NJ and Boston have a very distinct accents.

So does music. Rock & Roll has many differnt styles. As does every genre of music. There isn't just one style of rock music just like there isn't just one accent in the U.S.