Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ossetian
авд
←
Proto-Iranian
*haptá
(inherited)
→
Persian
هفت
(cognate)
→
Judeo-Tat
хьэфд
(cognate)
→
Northern Kurdish
heft
(cognate)
→
Pashto
اووه
(cognate)