Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
-soam
←
English
-some
(cognate)
←
Proto-Germanic
*-samaz
(inherited)
←
Old Frisian
-sum
(inherited)
→
English
-some
(cognate)