Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English mentee
English mentor (back-formation)
English -or (mention)
English -ee (mention)
English donor (mention)
English donee (mention)
English employer (mention)
English employee (mention)
Ancient Greek Μέντωρ (mention)

English e-mentee (prefix)
English menteeship (suffix)