Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
gronen
←
Old English
grānian
(inherited)
←
Proto-Germanic
*grainōną
(inherited)
←
Proto-Germanic
*grīnaną
(mention)
→
English
groan
(inherited)
→
English
groaning
(mention)
→
Middle English
gron
(back-formation)
→
Middle English
gronyng
(affix)