Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
ljúga
←
Proto-Germanic
*leuganą
(inherited)
←
Proto-Indo-European
*lewgʰ-
(derived)
←
Old Norse
ljúga
(inherited)
→
Icelandic
laun
(link)
→
Icelandic
lygn
(doublet)
→
Swedish
ljuga
(cognate)