Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Church Slavonic ѥзєро

→ Lower Sorbian jazor (cognate)
→ Lower Sorbian jazoro (cognate)
→ Lithuanian ežeras (cognate)
→ Latvian ezers (cognate)
→ Old Prussian assaran (cognate)