Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Middle English eighte
Old English eahta (inherited)
Proto-Germanic *ahtōu (inherited)
Proto-West Germanic *ahtō (inherited)
Proto-Indo-European *oḱtṓw (inherited)

English eight (inherited)
Middle English eiȝtetene (affix)
Middle English eiȝtthe (affix)
Scots aucht (mention)
Scots aicht (mention)
Yola ayght (inherited)