Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
meremennen
→
English
mermaid
(mention)
→
English
merman
(mention)
→
English
mermaiden
(cognate)
→
English
mermin
(inherited)