Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
thuner
←
Proto-West Germanic
*þunr
(inherited)
→
Old High German
donar
(cognate)
→
Old Norse
Þórr
(mention)