Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Latin cooperor
Latin con (prefix)
Latin operor (prefix)

Catalan cooperar (mention)
Spanish cooperar (mention)
Galician cooperar (mention)
Italian cooperare (mention)
Latin cooperator (affix)
Latin cooperans (mention)
Latin cooperaturus (mention)
Latin cooperatus (mention)
Latin cooperandus (mention)
Occitan cooperar (mention)
Polish kooperować (borrowed)
Romanian coopera (borrowed)