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 *-trom

→ English central (root)
→ English center (root)
→ English pabulum (mention)
→ English tabulate (mention)
→ English theater (root)
→ English lucre (mention)
→ English philtrum (root)
→ English monstrous (root)
→ English sceptre (root)
→ English canister (root)
→ English sistrum (root)
→ English rostrum (mention)
→ English philter (root)
→ English -tron (root)
→ English rostrate (root)
→ Old English -þor (inherited)
→ Irish saothar (mention)
→ Gothic 𐌷𐌻𐌴𐌹𐌸𐍂𐌰 (suffix)
→ Ancient Greek -τρον (inherited)
→ Latin rostrum (mention)
→ Latin culter (mention)
→ Latin -tor (mention)
→ Latin claustrum (mention)
→ Latin -culum (mention)
→ Latin rastrum (mention)
→ Latin plaustrum (mention)
→ Latin clitellae (suffix)
→ Latin -trum (inherited)
→ Latin cestrum (mention)
→ Latin mulctrum (mention)
→ Latin -crum (inherited)
→ Latvian arkls (mention)
→ Norwegian Bokmål teater (derived)
→ Norwegian Bokmål absurdteater (derived)
→ Sanskrit राष्ट्र (mention)
→ Sanskrit चरित्र (mention)
→ Sanskrit मेढ्र (mention)
→ Sanskrit दंष्ट्र (mention)
→ Sanskrit योक्त्र (mention)
→ Swedish lider (suffix)