Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Indo-Aryan *kriẓḍ-

→ Sanskrit क्रीळति (inherited)
→ Sanskrit क्रीडा (inherited)
→ Sanskrit क्रीड (inherited)
→ Sanskrit क्रीळ (inherited)
→ Sanskrit क्रीडिका (root)