Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
hard
←
Proto-West Germanic
*hard(ī)
(inherited)
→
Old English
heard
(cognate)
→
Old High German
hart
(cognate)
→
Old Norse
harðr
(cognate)