Final answer:
Bhangra is the music genre that is both a folk and popular music within Punjabi communities in India, Pakistan, and among the diaspora in Great Britain, not to be confused with the poetic and musical form Ghazal.
Step-by-step explanation:
The music genre that is both a folk and popular music common among Punjabi populations of northern India and southern Pakistan, as well as among the Indian diaspora in Great Britain, is Bhangra. Bhangra originated as a folk dance and music from the Punjabi region, performed to celebrate the harvest season. Over time, it has evolved and fused with other music forms, especially in Great Britain where Punjabi immigrants have mixed Bhangra with genres like hip-hop, reggae, and pop, making it popular both in its traditional and hybrid forms. By contrast, Ghazal is a poetic form dealing with the pain of loss and the beauty of love, often performed as a song in South Asia. With roots in Arabic poetry, a ghazal is composed of rhyming couplets and a refrain. Each line of the poem must be of the same syllabic length, and the first couplet sets the scheme that is repeated in subsequent couplets. It is not, however, known as a typical folk dance or music performed at Punjabi celebrations.