Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
mem
←
English
mum
(cognate)
←
Proto-West Germanic
*mōmā
(inherited)
←
Old Frisian
*mōme
(inherited)
→
English
mam
(cognate)
→
North Frisian
mam
(cognate)