Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
entullo
←
Galician
entullar
(back-formation)
←
Galician
tulla
(mention)
←
Portuguese
entulho
(cognate)