Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Irish cosmail
← Old Irish com- (affix)
← Old Irish samail (affix)

→ Irish coltach (derived(ga/gd))
→ Irish éagsúil (mention)
→ Irish cosúil (inherited)
→ Old Irish écsamail (affix)
→ Old Irish cosmailius (affix)