Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English regain
English re (prefix)
English gain (prefix)
French regagner (mention)
Middle French regaigner (mention)

English regainer (suffix)
English regainable (suffix)
English regaineth (suffix)
English regainest (suffix)
English regainment (suffix)