Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
ooldful
←
English
oldful
(cognate)
←
Saterland Frisian
oold
(suffix)
←
Saterland Frisian
ful
(suffix)