Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
swigian
←
Proto-West Germanic
*swīgēn
(inherited)
→
Middle English
swien
(inherited)
→
Pennsylvania German
schweige
(cognate)