Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Catalan cec
Spanish ciego (cognate)
Proto-Indo-European *káykos (inherited)
Proto-Italic *kaikos (inherited)
Latin caecus (inherited)
Occitan cec (cognate)

Catalan cegament (suffix)
Catalan ceguesa (suffix)
Catalan sordcec (compound)