Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
cald
→
Catalan
caldera
(affix)
→
Catalan
calent
(link)
→
Catalan
càlid
(doublet)
→
Catalan
caldejar
(affix)