Merriam-Webster's Collegiate® Dictionary, 11th Edition
SAME
I. adjective
Etymology: Middle English, from Old Norse samr; akin to Old High German sama same, Latin simulis like, simul together, at the same time, similis like, sem- one, Greek homos same, hama together, hen-, heis one
Date: 13th century
1. resembling in every relevant respect, conforming in every respect,
2. being one without addition, change, or discontinuance ; identical , being the one under discussion or already referred to, corresponding so closely as to be indistinguishable, equal in size, shape, value, or importance, Synonyms: see: same
II. pro noun
Date: 14th century
something identical with or similar to another, something or someone previously mentioned or described,
III. adverb
Date: 1766
in the same manner