Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
almáttugur
←
Proto-Germanic
*alamahtīgaz
(inherited)
←
Old Norse
almáttigr
(inherited)
→
Cimbrian
almachtig
(cognate)
→
Luxembourgish
allmächteg
(cognate)