Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
feic
←
Proto-Celtic
*ad-kʷis-o-
(inherited)
←
Irish
fheic
(mention)
←
Scottish Gaelic
faic
(cognate)
←
Proto-Indo-European
*kʷey-
(derived)
←
Proto-Indo-European
*kʷes-
(derived)
←
Sanskrit
चायति
(cognate)
←
Sanskrit
चक्षति
(cognate)
←
Old Irish
·aicci
(inherited)
←
Old Irish
ad·cí
(mention)
→
Irish
fusa
(mention)
→
Irish
chí
(mention)
→
Irish
tíos
(mention)
→
Irish
féidir
(mention)
→
Scottish Gaelic
faic
(cognate)