Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Esperanto
firmo
←
Spanish
firma
(cognate)
←
Proto-Indo-European
*dʰer-
(root)
←
Italian
firma
(cognate)
←
Latin
firmare
(derived)
←
Latin
firmus
(mention)
→
Esperanto
firmonomo
(compound)