Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
crom
←
Old English
crumb
(derived)
←
German
krumm
(cognate)
←
Proto-Germanic
*krumbaz
(derived)
←
Middle Irish
cromm
(inherited)
←
Dutch
krom
(cognate)
←
Old Irish
cromb
(inherited)
→
English
cromlech
(cognate)
→
English
Crumlin
(mention)
→
Welsh
cromlech
(cognate)