Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Luxembourgish géint
German gegen (cognate)
Proto-Germanic *gagin (inherited)
Middle High German gegen (inherited)
Old High German gagan (inherited)
Icelandic gegn (cognate)
Dutch tegen (cognate)

Luxembourgish Géigner (mention)
Luxembourgish Géigend (suffix)
Luxembourgish géinteneen (compound)
Luxembourgish dogéint (compound)