Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
bútur
←
Proto-Germanic
*butaz
(inherited)
←
Proto-Germanic
*buttaz
(mention)
←
Old Norse
bútr
(inherited)
→
English
butt
(cognate)