Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *h₂erk-

→ English arcane (root)
→ English ogre (root(en/fr))
→ English arcana (root)
→ English arcanum (root)
→ English ark (root)
→ English exercise (root)
→ English coerce (root)
→ English coercion (root)
→ Cebuano eksersays (root)
→ Persian ارگ (inherited)
→ Ancient Greek ἀρκέω (root)
→ Ancient Greek ἀρκέω (derived)
→ Latin arx (root)
→ Latin arx (derived)
→ Latin exercitium (root)
→ Latin arcanus (root)
→ Latin arcanus (derived)
→ Latin exercitus (root)
→ Latin exercitus (derived)
→ Latin parco (root)
→ Latin parco (derived)
→ Latin arca (root)
→ Latin exerceo (root)
→ Latin arceo (root)
→ Latin arceo (derived)
→ Latin coerceo (root)
→ Latin porceo (root)
→ Latin Orcus (derived)
→ Latin arcera (root)
→ Latin arcera (derived)
→ Ligurian esercìçio (root)
→ Ligurian esercitaçión (root)
→ Ligurian esercitâ (root)
→ Mòcheno ork (root)
→ Norwegian Bokmål ark (inherited)
→ Old Armenian արգել (inherited)