Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
-je
←
German
-en
(cognate)
←
West Frisian
-e
(cognate)
←
Proto-West Germanic
*-ōn
(inherited)
←
Old Frisian
-ia
(inherited)