Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
anon
←
Old English
[[on]] [[ān]]
(derived)
←
Middle English
on
(mention)
←
Middle English
an
(mention)
→
English
anon
(mention)