Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
loangsoam
←
Proto-West Germanic
*langasam
(inherited)
←
Old Frisian
*langsum
(inherited)
←
Saterland Frisian
loang
(suffix)
←
Saterland Frisian
soam
(suffix)