Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
planarius
←
Proto-Indo-European
*pleh₂-
(root)
←
Proto-Indo-European
*pleh₂-
(mention)
←
Latin
plānus
(mention)
←
Latin
plānus
(suffix)
←
Latin
ārius
(suffix)
→
English
planarian
(mention)