Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Welsh -ad
← Proto-Brythonic *-ad (inherited)
← Proto-Brythonic (mention)
← Proto-Brythonic (mention)
← Cornish -as (cognate)

→ Welsh lleuad (suffix)
→ Welsh -aid (link)
→ Welsh crynhoad (affix)
→ Welsh dylanwad (suffix)
→ Welsh arestiad (affix)
→ Welsh lleihad (affix)
→ Welsh galwad (affix)
→ Welsh caead (affix)
→ Welsh dyhead (affix)
→ Welsh mwynhad (affix)
→ Welsh caniatâd (affix)
→ Welsh ysgafnhad (affix)
→ Welsh goleuad (affix)
→ Welsh -adau (compound)
→ Welsh cyfiawnhad (affix)
→ Welsh adfeiliad (affix)
→ Welsh animeiddiad (affix)
→ Welsh -edydd (compound)
→ Welsh adfywiad (affix)
→ Welsh parhad (affix)
→ Welsh ailgread (affix)
→ Welsh esmwythâd (affix)
→ Welsh atgoffâd (affix)