Volatile (adjective) غیر مستحکم، بدلتے مزاج والا

(of a substance) easily evaporated at normal temperatures.
Example: “volatile solvents such as petroleum ether, hexane, and benzene”
Endeavour (verb) جدوجہد، کوشش کرنا

try hard to do or achieve something.
Example: “he is endeavouring to help the Third World”