Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Tibetan ས
← Proto-Sino-Tibetan *(s/z)a-j (inherited)

→ Tibetan ལྷ་ས (mention)
→ Tibetan ས་བོན (compound)
→ Tibetan གད་སྙིག་བླུག་ས (link)
→ Khumi Chin sä-i (cognate)
→ Kurtop ས (cognate)
→ Chinese 沙 (cognate)