And the word from arabic comes, for both of them comes from persian for hte term lapis lazuli (lāžward) and suposedly this comes from sanskrit... but I ignore how it may sound in sanskrit.

Lapis Lazuli is cognate, both come from the same Arabic/Persian root. Apparently “azure”, “azul”, “azzurro” lost the L because it got confused with the common “l’” article,

In french we have “azur”