Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Church Slavonic помощь
← Old Church Slavonic по (prefix)
← Old Church Slavonic мощь (prefix)
← Proto-Slavic *pomoťь (inherited)

→ Old Church Slavonic помощьникъ (suffix)
→ Lower Sorbian pomoc (cognate)
→ Russian помощь (borrowed)