Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
þreskja
←
Proto-Germanic
*þreskaną
(inherited)
←
Old Norse
þreskja
(inherited)
→
Luxembourgish
dreschen
(cognate)