archives: [17] The Greek verb arkhein meant originally ‘begin’ – and hence ‘be in first place, rule’. This sense development lies behind the diversity in meaning of the words ultimately derived from it in English. Greek arkheion was the official residence of a ruler, a ‘public office’, and its plural, arkheia, was used for ‘public records’; it passed into English via Latin archīa, later archīva, and French archives.
Greek arkhē, on the other hand, had the sense ‘beginning’, and the adjective formed from it, arkhaios, later arkhaikós, ‘ancient’, came through French archaïque into English as archaic [19] (arkhaios is also the source of archaeology [17]). The same split in meaning is evident in the prefix arch-, which comes from the same source: in archetype, for instance, it signifies ‘first’, whereas in archduke it implies ‘highest in rank’. => archaic, archetype
archives (n.)
c. 1600, from French archif (16c.), from Late Latin archivum (singular), from Greek ta arkheia "public records," plural of arkheion "town hall," from arkhe "government," literally "beginning, origin, first place" (see archon).