Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
flett
←
Proto-Germanic
*flatją
(inherited)
←
Proto-Germanic
*flataz
(mention)
←
Proto-Indo-European
*pleth₂-
(derived)
←
Old Frisian
flet
(cognate)
→
English
flat
(mention)
→
English
flatter
(mention)
→
English
flet
(mention)
→
Middle English
flet
(mention)
→
French
flatter
(mention)