Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
placid
←
French
placide
(mention)
←
Latin
placidus
(mention)
←
Latin
placeō
(mention)
→
English
placidly
(suffix)
→
English
placidity
(suffix)
→
English
placidness
(suffix)
→
English
placify
(mention)
→
English
unplacid
(prefix)