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 *h₃erbʰ-

→ English robot (root)
→ English bot (root)
→ English orphan (root)
→ English robotic (root)
→ English robo- (root)
→ English erf (derived)
→ English coarb (root)
→ Old English ierfe (derived)
→ Cebuano robot (root)
→ Czech rob (derived)
→ Czech robota (derived)
→ Czech robě (derived)
→ Czech robit (derived)
→ Czech robův (derived)
→ Danish arv (derived)
→ German arm (derived)
→ German Erbe (derived)
→ Middle Dutch erven (derived)
→ Middle Dutch erve (derived)
→ Middle English erve (derived)
→ Finnish arpa (root)
→ Irish comharba (root)
→ Irish forba (root)
→ Proto-Norse ᚨᚱᛒᛁᛃᚨ (inherited)
→ Old High German erbi (root)
→ Gothic 𐌰𐍂𐌱𐌹 (root)
→ Ancient Greek ὀρφανός (root)
→ Ancient Greek ὀρφανός (mention)
→ Armenian որբ (root)
→ Icelandic erfa (derived)
→ Latin orbus (root)
→ Latin orbus (mention)
→ Mòcheno òrbet (root)
→ Norwegian Bokmål arv (derived)
→ Dutch erven (derived)
→ Norwegian Nynorsk arv (derived)
→ Old Norse arfr (root)
→ Old Norse arfskipti (root)
→ Old Norse arftaki (root)
→ Old Norse arftakari (root)
→ Old Norse arftaka (root)
→ Old Norse arfsal (root)
→ Old Norse arfsalsmaðr (root)
→ Old Norse arftǫkukarl (root)
→ Old Norse arftǫkumaðr (root)
→ Old Norse arfkaup (root)
→ Old Norse arfskot (root)