Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
Spreeker
←
Proto-Germanic
*sprekô
(derived)
←
Old Frisian
spreker
(inherited)
←
Old Frisian
spreka
(derived)
←
Saterland Frisian
spreeke
(suffix)
←
Saterland Frisian
er
(suffix)
→
English
speaker
(cognate)