Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Irish marcach
← Proto-Celtic *markākos (inherited)
← Old Irish marc (affix)
← Old Irish -ach (affix)

→ Irish marcach (inherited)
→ Scottish Gaelic marcach (inherited)
→ Manx markiagh (cognate)
→ Manx markiaght (mention)