Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
crás
←
Latin
crās
(derived)
←
Old Portuguese
cras
(derived)
←
Sardinian
cras
(cognate)
←
Sicilian
crai
(cognate)
→
Galician
crás
(cognate)