Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Catalan pur
← Latin pūrus (inherited)
← Old Occitan pur (inherited)

→ Catalan apurar (affix)
→ Catalan purista (affix)
→ Catalan purament (suffix)
→ Catalan puríssim (affix)
→ Catalan purisme (suffix)