Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
señero
←
Spanish
singular
(doublet)
←
Latin
singulāris
(inherited)
←
Old Spanish
sennero
(inherited)
→
Spanish
singular
(doublet)
→
Galician
senlleiro
(cognate)
→
Galician
señeiro
(cognate)
→
Portuguese
senheiro
(cognate)