What is the difference between medicaid and medicare?

Fed vs state program: Regardless of state, Medicare is federal program that offers healthcare to elderly (older than 65yo) & disabled (regardless of age). OTOH, Medicaid is state program that offers healthcare to indigent below state-specific guidelines. Check https://goo.gl/4PkfZb, http://www.michigan.gov/mdch/0,4612,7-132-2943_4860-35199--,00.html & http://www.michiganinbrief.org/edition06/text/issues/issue-45.htm