Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Russian -ак
← Old East Slavic -акъ (inherited)
← Proto-Slavic *-akъ (inherited)

→ Russian рыбак (affix)
→ Russian верстак (mention)
→ Russian солончак (affix)
→ Russian черпак (affix)
→ Russian натощак (affix)