Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*laiką
→
English
lake
(inherited)
→
English
-lac
(derived(en/ang))
→
English
laik
(inherited)
→
English
-lock
(derived)
→
Old English
lac
(inherited)
→
Old English
-lac
(inherited)