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 *h₂éǵros

→ English acre (inherited)
→ English aager (inherited(en/yol))
→ Old English æcer (inherited)
→ Danish ager (derived)
→ Danish agerhøne (derived)
→ German Acker (inherited)
→ Middle Dutch acker (inherited)
→ Middle English aker (inherited)
→ Faroese akur (inherited)
→ Irish acra (derived)
→ Galician agro (derived)
→ Galician agra (derived)
→ Mycenaean Greek 𐀀𐀒𐀫 (inherited)
→ Gothic 𐌰𐌺𐍂𐍃 (inherited)
→ Ancient Greek ἀγρός (inherited)
→ Hindi एकड़ (derived)
→ Icelandic akur (inherited)
→ Italian agro (inherited)
→ Latin ager (inherited)
→ Norwegian Bokmål acre (derived)
→ Norwegian Bokmål åker (derived)
→ Dutch akker (inherited)
→ Norwegian Nynorsk acre (derived)
→ Norwegian Nynorsk åker (derived)
→ Old Norse akr (derived)
→ Old Saxon akkar (inherited)
→ Portuguese acre (derived)
→ Portuguese onagro (mention)
→ Romanian agru (derived)
→ Russian аграрный (derived)
→ Sanskrit अज्र (inherited)
→ Sumerian 𒀀𒃼 (cognate)
→ Swedish åker (inherited)
→ Old Armenian արտ (inherited)
→ Old Armenian ագարակ (cognate)
→ Umbrian 𐌀𐌂𐌄𐌓 (inherited)