Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
platitude
←
French
platitude
(borrowed)
←
French
plat
(mention)
←
Ancient Greek
πλᾰτῠ́ς
(derived)
→
English
platitudinous
(affix)
→
English
platitudise
(suffix)
→
English
platitudeness
(suffix)