Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
mar
←
Proto-Germanic
*marhaz
(inherited)
←
Proto-Germanic
*mari
(inherited)
←
Icelandic
merja
(mention)
←
Old Norse
marr
(inherited)
←
Old Norse
marr
(inherited)
→
Old English
mearh
(cognate)
→
Icelandic
margæs
(compound)