Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
infirm
←
Middle English
infirme
(inherited)
←
Proto-Indo-European
*dʰer-
(root)
←
Latin
infirmus
(derived)
→
English
infirmity
(suffix)
→
English
infirmly
(suffix)
→
English
infirmness
(suffix)