Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*gaumô
→
English
gum
(mention)
→
Cimbrian
gaumo
(inherited)
→
German
Gaumen
(inherited)
→
Old High German
goumo
(inherited)
→
Luxembourgish
Gumm
(cognate)
→
Lithuanian
gomurys
(mention)