Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
-mer
←
Ancient Greek
μέρος
(borrowed)
→
English
pentadecamer
(affix)
→
English
heptadecamer
(affix)
→
English
coatomer
(affix)
→
English
amplimer
(affix)
→
English
-merous
(cognate)
→
English
phytomer
(affix)