Bharat Kshetra and Airavat Kshetra are two of the seven Kshetras (regions) of Jambūdvīpa in Jain cosmology. Bharat Kshetra is the central land where humans live and where Tirthankaras are born and preach. Airavat Kshetra is the opposite or north-side region with a similar spiritual significance in many descriptions. Together with Mahavideha Kshetra, these are considered the main karmabhumi where liberation can be sought. The other three zones Ramyak, Hairanyavat, and Haimavata are sometimes described as bhogabhumi where life is more centered in pleasure. ( jainqq.org)
In Jain cosmology, Bharat Kshetra, Mahavideha Kshetra, and Airavat Kshetra are often treated as the primary karmabhumi (where spiritual practice and Tirthankaras occur), whereas the other three zones are akarmabhumi (bhogabhumi) where spiritual prospects are limited. This framework is found in canonical summaries that describe the seven zones of Jambūdvīpa and their spiritual character. ( jainqq.org)
About differences between Digambar and Shwetambar traditions: the core outline of the seven Kshetras and their general spiritual significance is commonly shared in Jain cosmology. Textual details may vary in different digests, but Bharat and Airavat are consistently treated as important regions within Jambūdvīpa. If you’d like, I can point to specific passages from Digambar and Shwetambar sources that discuss these kshetras. ( jainqq.org)