Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
greu
←
Proto-Indo-European
*gʷréh₂us
(inherited)
←
Latin
gravis
(inherited)
←
Romanian
grav
(doublet)
→
Catalan
greu
(cognate)
→
Romanian
greutate
(suffix)
→
Romanian
grav
(doublet)
→
Romanian
greață
(suffix)
→
Romanian
îngreca
(mention)
→
Romanian
îngreuia
(mention)
→
Romanian
greoi
(suffix)
→
Romanian
semigreu
(affix)
→
Aromanian
greu
(cognate)