Country-and-western and Hillbilly music

Hillbilly music and country-and-western are semantically related in folk-style music topic. In some cases you can use "Hillbilly music" instead a noun phrase "Country-and-western", when it comes to topics like country and western music.

Hillbilly music noun - Country music originating in mountainous regions of southern United States.

Country-and-western and hillbilly music are semantically related in folk-style music topic. You can use "Country-and-western" instead a noun phrase "Hillbilly music", if it concerns topics such as country and western music.