Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
gai
←
English
gay
(cognate)
←
French
gaine
(cognate)
←
French
vague
(doublet)
←
Old French
gai
(derived)
←
Gothic
*𐌲𐌰𐌷𐌴𐌹𐍃
(derived)
←
Italian
gaio
(cognate)
←
Latin
vagus
(derived)
←
Old Occitan
gai
(derived)
→
English
gaiety
(mention)
→
Esperanto
gaja
(derived)
→
Spanish
guay
(cognate)
→
French
vague
(doublet)
→
French
gay
(doublet)
→
French
égayer
(confix)
→
French
gaîté
(suffix)
→
French
antigai
(prefix)
→
Italian
gaio
(cognate)