Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
glücken
→
Danish
lykkes
(cognate)
→
German
beglücken
(prefix)
→
German
missglücken
(affix)
→
Luxembourgish
glécken
(cognate)