Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
sete
←
Proto-Indo-European
*septḿ̥
(inherited)
←
Latin
septem
(inherited)
←
Old Portuguese
sete
(inherited)
→
Corsican
sette
(cognate)
→
Spanish
siete
(cognate)
→
Kabuverdianu
seti
(derived)
→
Guinea-Bissau Creole
seti
(derived)