Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English ensign
English insignia (doublet)
Middle English ensigne (inherited)
Old French enseigne (derived)
Proto-Indo-European *sek- (root)
Proto-Indo-European *sekʷ- (root)
Latin īnsignia (derived)
Latin īnsigne (mention)

English cornet (mention)
English flag (link)
English ancient (mention)
English insignia (doublet)
English ensigncy (suffix)
English ensignship (suffix)