The Great Bear is the common name for Ursa Major (Latin for 'Larger Bear'), a constellation visible throughout the year in most of the northern hemisphere. Ursa Major has been seen as a bear by many distinct civilizations.
The Pleiades is a star cluster located in the constellation of Taurus. The name comes from Greek mythology after the Seven Sisters, the seven daughters of the titan Atlas and the sea-nymph Pleione. They were placed among the stars by Zeus to save them from the pursuit of Orion.