Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Irish toit
← Scottish Gaelic toit (cognate)
← Middle Irish tútt (derived)

→ Irish toitín (affix)
→ Irish toitdíonach (affix)
→ Irish toitiúil (affix)
→ Irish toiteach (affix)
→ Irish toitcheo (affix)
→ Scottish Gaelic toit (cognate)