Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
cócegas
←
Galician
cóxegas
(cognate)
←
Portuguese
cocegar
(back-formation)
→
Galician
cóxegas
(cognate)