Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
slægur
←
Proto-Germanic
*slōgiz
(inherited)
←
Old Norse
slægr
(inherited)
←
Old Norse
slœgr
(mention)
→
English
sly
(cognate)