Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Irish dúid
← Old Irish dúd (inherited)

→ English dude (cognate)
→ Irish dúdóg (affix)
→ Irish dúdach (affix)
→ Irish dúdaire (affix)
→ Irish dúidín (affix)