Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
riego
←
Spanish
regar
(mention)
←
Latin
riguum
(mention)
←
Portuguese
rego
(cognate)
→
Portuguese
rego
(cognate)