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”
Inclination (noun)
رجحان، رغبت،جھکاﺅ
a person’s natural tendency or urge to act or feel in a particular way; a disposition.
Example: “John was a scientist by training and inclination”