Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*airi
→
Old English
ær
(inherited)
→
Middle English
er
(inherited)
→
Old High German
er
(inherited)
→
Low German
wannehr
(mention)
→
Old Dutch
er
(inherited)
→
Old Frisian
er
(inherited)
→
Old Saxon
er
(inherited)
→
Yola
ear
(inherited)