Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
treowþ
←
Old English
trēowe
(suffix)
←
Old English
þ
(suffix)
←
Proto-Germanic
*triwwiþō
(inherited)
←
Old Norse
tryggð
(cognate)