Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Catalan dolç
Spanish dulce (cognate)
French doux (cognate)
Latin dulcem (inherited)
Latin dulcis (mention)
Occitan doç (cognate)
Old Occitan dous (inherited)

Catalan dolçament (suffix)
Catalan dolçor (affix)
Catalan agredolç (compound)
Catalan endolcir (affix)
Catalan cotó-en-pèl dolç (link)