Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
κάστανα
←
Ancient Greek
Καστανέα
(mention)
←
Ancient Greek
κάστον
(mention)
←
Albanian
thanë
(cognate)
←
Proto-Albanian
*tsàna
(cognate)
←
Old Armenian
կասկ
(cognate)
→
Moroccan Arabic
قسطل
(derived)
→
Azerbaijani
kəstanə
(derived)
→
Cimbrian
khest
(derived)
→
Maltese
qastan
(derived)