Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Elfdalian
sikka
←
Proto-Germanic
*sinkwaną
(derived)
←
Old Norse
søkkva
(derived)
←
Swedish
sjunka
(cognate)