Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
blautur
←
Proto-Germanic
*blautaz
(derived)
←
Old Norse
blautr
(derived)
→
Alemannic German
bloos
(cognate)
→
Luxembourgish
blouss
(cognate)