Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
hvar
←
Proto-Germanic
*hwar
(derived)
←
Old Norse
hvar
(derived)
→
English
where
(cognate)
→
Alemannic German
warr
(cognate)
→
Icelandic
hvert
(mention)
→
Luxembourgish
wou
(cognate)