Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Faroese
tjúkkur
←
Proto-Germanic
*þekuz
(derived)
←
Old Norse
þykkr
(derived)
←
Old Norse
þjukkr
(mention)
→
English
thick
(cognate)