Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
side
←
Proto-Germanic
*sīdǭ
(derived(ofs/fy))
→
Old English
sidu
(cognate)
→
Saterland Frisian
Sidde
(derived)