Question

differenece between portrait and landscape orientation

Answer 1

portrait orientation is in vertical way.
                 whereas
landscape orientation is in horizontal way. 

Answer 2

Portrait and landscape mode are two types of page orientation. The modes can be used to describe printed pages as well as digital photos. Simply put, a page or image displayed in portrait mode is taller than it is wide. Conversely, a page or image displayed in landscape mode is wider than it is tall.