Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-European *h₁ergʰ-

→ Old English earh (derived)
→ Ancient Greek ὀρχέομαι (inherited)
→ Ancient Greek ἔρχομαι (inherited)
→ Sanskrit ऋघायति (mention)
→ Old Irish téit (mention)