Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
rêch
←
Proto-Germanic
*hrugjaz
(inherited)
←
Old Frisian
hreg
(inherited)
→
English
ridge
(cognate)
→
West Frisian
rêchbonke
(affix)
→
West Frisian
rêchbonke
(affix)
→
Luxembourgish
Réck
(cognate)