Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
-fæst
←
Old English
fæst
(cognate)
→
English
soothfast
(mention)
→
Old English
stedefæst
(affix)
→
Old English
staþolfæst
(affix)
→
Old English
unstaþolfæst
(affix)