Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Yiddish
קויפֿן
←
Proto-Germanic
*kaupōną
(inherited)
←
Proto-Germanic
*kaupô
(mention)
←
Middle High German
koufen
(inherited)
←
Proto-West Germanic
*kaupōn
(inherited)
←
Old High German
koufōn
(inherited)
←
Old High German
koufo
(mention)
←
Latin
caupō
(derived)
→
Yiddish
פֿאַרקויף
(prefix)
→
Yiddish
פֿאַרקויפֿן
(prefix)
→
Yiddish
אײַנקויפֿן
(affix)