Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Swedish
femton
←
Proto-Germanic
*fimftehun
(inherited)
←
Old Swedish
fæmtan
(inherited)
←
Old Norse
fimmtán
(inherited)