Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
seachtain
←
Latin
septimus
(derived)
←
Old Irish
sechtmain
(inherited)
→
Irish
seachtainiúil
(affix)
→
Irish
seachtanán
(affix)
→
Irish
7ain
(mention)
→
Manx
shiaghtin
(cognate)