Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
costful
←
English
cost
(suffix)
←
English
ful
(suffix)
←
Middle English
costful
(inherited)
←
Middle English
costful
(cognate)
→
English
costfully
(suffix)