Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
traueren
←
German
trauern
(cognate)
←
Old High German
trūrēn
(inherited)
←
Dutch
treuren
(cognate)