Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
farfar
←
Danish
far
(compound)
←
Danish
far
(compound)
←
Icelandic
föðurfaðir
(cognate)
←
Norwegian
farfar
(cognate)
←
Old Norse
fǫðurfaðir
(inherited)
←
Swedish
farfar
(cognate)