Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Galician comezar
Latin com- (mention)
Latin initiāre (inherited)
Latin initiō (mention)
Old Portuguese começar (inherited)
Old Portuguese *comẽeçar (mention)

Catalan començar (cognate)
Galician comezo (back-formation)
Portuguese começar (cognate)