Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
reunion
←
English
re
(prefix)
←
English
union
(prefix)
←
Middle French
réunion
(mention)
→
English
reunionist
(suffix)
→
English
reunionism
(suffix)
→
English
reune
(back-formation)