Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Bulgarian -вш
← Bulgarian -ш (mention)
← Proto-Slavic *-vъšь (inherited)

→ Bulgarian бивш (affix)
→ Bulgarian явш (affix)
→ Bulgarian давш (affix)
→ Bulgarian любвеобив (affix)
→ Bulgarian скривш (affix)
→ Bulgarian почивш (affix)
→ Lithuanian -us (cognate)