Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Italian
regolo
←
Italian
regolare
(back-formation)
←
Italian
regolo calcolatore
(link)
←
Latin
rēgulus
(borrowed)
←
Latin
rēx
(mention)
→
Italian
regolare
(link)