same

Synonyms: aforementioned aforesaid carbon carbon-copy clone coequal comparable compatible corresponding ditto double dupe duplicate equal equivalent indistinguishable interchangeable in the same manner like likewise look-alike related same difference selfsame similar similarly synonymous tantamount twin very xerox

Antonyms: different inconsistent polar unlike

Synonyms: changeless consistent constant invariable perpetual unaltered unchanged unfailing uniform unvarying

Antonyms: changing inconsistent variable wavering