Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
hvatur
←
Proto-Germanic
*hwataz
(inherited)
←
Old Norse
hvatr
(inherited)
→
Norwegian Nynorsk
kvat
(cognate)