Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
þenkja
←
Middle Low German
denken
(derived)
←
Low German
denken
(derived)
←
Old Norse
þenkja
(inherited)
←
Old Saxon
thenkian
(derived)
→
Icelandic
þanki
(cognate)