Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
þang
←
Proto-Germanic
*þanga
(derived)
←
Proto-Germanic
*þinhaną
(cognate)
←
Proto-Indo-European
*tenk-
(derived)
←
Old Norse
þongull
(derived)
←
Old Norse
þang
(mention)
←
Swedish
tång
(cognate)
→
English
tang
(cognate)