"Legend" vs. "Inscription"

When the Krause SCWC has both "Legend" and "Inscription", how does one distinguish between them?

For instance, this coin in Numista just has "Lettering" ...
https://en.numista.com/catalogue/pieces5604.html

... but the Standard Catalog of World Coins for the same coin has ...
https://www.ngccoin.com/price-guide/world/china-provincial-hupeh-province-10-cash-y-122-1902-05-cuid-1047079-duid-1290428

Obverse Legend: Hu-peh Sheng Tsao
Obverse Inscription: Kuang-hsu Yuan-pao

I hope this helps: https://www.coinbooks.org/v21/esylum_v21n29a20.html