Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Czech měsíc
Proto-Indo-European *mḗh₁n̥s (derived)
Proto-Slavic *měsęcь (inherited)
Old Czech měsiec (inherited)

Czech měsíčník (affix)
Czech měsíční (suffix)
Czech měsíček (suffix)
Czech půlměsíc (prefix)
Latvian mēnesis (cognate)
Latvian mēness (cognate)