Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
sýr
←
Proto-Germanic
*sūz
(inherited)
←
Proto-Indo-European
*sū-
(derived)
←
Old Norse
sýr
(inherited)
→
Alemannic German
Sou
(cognate)
→
Alemannic German
Suu
(cognate)
→
Luxembourgish
Sau
(cognate)