Stagnant (adjective) بے حرکت،

(of a body of water or the atmosphere of a confined space) having no current or flow and often having an unpleasant smell as a consequence.
Example: “a stagnant ditch”
Vagary تغیر، وہم، ترنگ، موج

an unexpected and inexplicable change in a situation or in someone’s behaviour.
Example: “the vagaries of the weather”