Synonyms for Same:

adj.

alike, identical (adjective)
equivalent, likewise, equal, corresponding, indistinguishable, aforesaid, like, related, very, tantamount, aforementioned, similarly, selfsame, duplicate, comparable, interchangeable, twin.
duplicate (adjective)
Identic.
equal (adjective)
indistinguishable, equivalent, alike, equal, identical, tantamount, one and the same, like.
identical (adjective)
twin, indistinguishable, equivalent, alike, identical, interchangeable, duplicate.
similar (adjective)
alike, like, homogeneous.
unchanging (adjective)
unchanged, constant, changeless, consistent, invariable, uniform, unvarying, unfailing.
uniform (adjective)
level, invariable, like, undeviating, assonant, regular, homogeneous, unvarying, consistent, indistinguishable, even, monolithic, uniform, undiversified, seamless, consonant, equable, unbroken, steady, undifferentiated, alike.
united (adjective)
elemental, undivided, holistic, united, monolithic, uniform, integrated, simple, coincident, atomic, congruous, irreducible, intact, solid, single, fundamental, homogeneous, entire, pure, unified, congruent, integral, cohesive, complete, coherent, indivisible.

n.

can take something or leave it, similarly, not give a fig about/for something, trample something/someone underfoot, related, not give/care a damn (about), not give a hoot/two hoots, have the hide of an elephant/rhinoceros, someone couldn't care less, look out for yourself/number one, likewise. Identic. constant, unchanging, change, unfailing, changeless. invariant. same (noun)
equivalent, comparable, aforesaid, indistinguishable, very, selfsame, identical, like, corresponding, equal, unchanged, said, self, aforementioned, one, synoptical, assonant, synoptic, one and the same, duplicate.

Other synonyms:

invariant, Identic, unchanging.