Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
sam
←
Old English
sumor
(cognate)
←
Proto-Celtic
*samos
(inherited)
←
Welsh
haf
(cognate)
←
Proto-Indo-European
*sm̥-h₂-ó-
(derived)
←
Old Armenian
ամառն
(cognate)
→
Irish
Samhain
(cognate)
→
Old Irish
Samain
(mention)