Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
feltro
←
Spanish
fieltro
(cognate)
←
Galician
filtro
(doublet)
←
Proto-West Germanic
*felt
(derived)
←
Latin
feltrum
(mention)