Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
splott
←
Proto-Germanic
*spluttaz
(inherited)
←
Proto-West Germanic
*splott
(inherited)
←
Proto-Indo-European
*splt-no-
(derived)
←
Proto-Indo-European
*(s)pel-
(derived)
→
English
spot
(inherited)
→
English
splot
(inherited)