Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
embelga
←
Proto-Celtic
*ambi-
(derived)
←
Proto-Celtic
*el-
(derived)
←
Proto-Celtic
*-ikos
(derived)
←
Spanish
amelga
(cognate)