Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
säin
←
German
sein
(cognate)
←
West Frisian
syn
(cognate)
←
Proto-Germanic
*sīnaz
(derived)
←
Old High German
sīn
(derived)
←
Icelandic
sinn
(cognate)
←
Dutch
zijn
(cognate)