Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
truhan
←
Breton
tru
(cognate)
←
Gaulish
*trūgantos
(derived)
←
Gaulish
*trūgos
(mention)
←
English
truant
(cognate)
←
Old French
truand
(derived)
←
Irish
trogán
(cognate)
←
Old Spanish
trufán
(inherited)
←
Old Irish
tróg
(cognate)