Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
plegian
←
Proto-West Germanic
*plegōn
(inherited)
→
English
play
(inherited)
→
English
play
(mention)
→
English
plaw
(cognate)
→
Old English
plegol
(affix)