Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
helmgitrostio
←
Proto-Germanic
*traustą
(cognate)
←
Old Saxon
helm
(compound)
←
Old Saxon
*gitrōstio
(compound)
←
Old Saxon
gitrōst
(mention)