Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Trei
←
German
Treue
(cognate)
←
English
true
(cognate)
←
Proto-Germanic
*trewwō
(inherited)
←
Middle High German
triuwe
(inherited)
←
Old High German
triuwa
(inherited)
←
Dutch
trouw
(cognate)