Yes, it is referring to the same plant. All plants are classified by botanical names that include a genus and species and sometimes a variety or cultivar. Sansevieria is the genus and Snake Plant is one of the common names along with Mother In Law's Tongue. Oh if it were that cut and dry! Occasionally a plant gets reclassified which always drives me crazy because it's hard enough to learn those Latin names the first time around. The genus Sansevieria has just been replaced with Dracaena (you may be familiar with the popular floor plant Dracaena Lisa) although they're still currently being sold as Sansevierias. So if you see a plant labeled as Dracaena trifasciata and not Sansevieria trifasciata, just know it's a Trifasciata Snake Plant.