Difference between smoke testing and sanity testing

Smoke Testing is non-exhaustive software testing, ascertaining that the most crucial functions of a program work, but not bothering with finer details. Sanity Testing is a cursory testing,it is performed whenever a cursory testing is sufficient to prove the application is functioning according to specifications. This level of testing is a subset of regression testing. It normally includes a set of core tests of basic GUI functionality to demonstrate connectivity to the database, application servers, printers, etc.