Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
sámh
←
Proto-Celtic
*sāmos
(inherited)
←
Proto-Celtic
*sāmyā
(inherited)
←
German
sanft
(cognate)
←
English
soft
(cognate)
←
Irish
sáimhe
(link)
←
Irish
sámhas
(link)
←
Proto-Indo-European
*sem-
(root)
←
Proto-Indo-European
*somos
(derived)
←
Proto-Indo-European
*sem-
(derived)
←
Old Irish
sám
(inherited)
←
Old Irish
sámae
(inherited)