Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Armenian պատճառ
← Proto-Indo-European *kʷer- (cognate)
← Proto-Iranian *pati- (cognate)
← Proto-Iranian *kar- (mention)

→ Armenian պատճառ (inherited)
→ Armenian պատճառավ (mention)
→ Old Armenian պատճառական (suffix)