Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Plautdietsch
Soom
←
English
seam
(cognate)
←
Proto-Germanic
*saumaz
(inherited)
←
Middle Low German
sôm
(inherited)
←
Proto-West Germanic
*saum
(inherited)
←
Old Saxon
sōm
(inherited)