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 *h₁eḱ-

→ English hippopotamus (root)
→ English Xanthippe (derived)
→ English equine (root)
→ English equestrian (root)
→ English equestrianism (root)
→ English equison (root)
→ English hippo- (root)
→ English hippic (root)
→ English hippic (derived)
→ Old English eoh (root)
→ Welsh diog (derived)
→ Mycenaean Greek 𐀂𐀦 (root)
→ Ancient Greek ἵππος (root)
→ Ancient Greek ὠκύς (root)
→ Ancient Greek ὠκύς (inherited)
→ Ancient Greek ὠκύπους (root)
→ Ancient Greek ὠκύπορος (root)
→ Icelandic jór (root)
→ Latin eques (root)
→ Latin equito (root)
→ Latin equus (root)
→ Latin equester (root)
→ Latin equiso (root)
→ Latin ocior (root)
→ Latin ocior (inherited)
→ Lithuanian ašva (root)
→ Norwegian Bokmål øy (root)
→ Norwegian Bokmål øy (mention)
→ Norwegian Bokmål Karmøy (mention)
→ Norwegian Bokmål Karlsøy (mention)
→ Norwegian Bokmål Karlsøya (mention)
→ Norwegian Bokmål Karlsøya (mention)
→ Old Norse jór (root)
→ Maharastri Prakrit 𑀆𑀲 (root)
→ Old Prussian aswinan (root)
→ Sanskrit आशु (mention)