the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen

a state of being alert or vigilant, often in reference to an emergency

सतर्कता

English Usage: The air alert sounded, prompting everyone to take cover.

Hindi Usage: हवा की चेतावनी बजी, जिससे सभी को छिपने के लिए कहा गया।

to warn someone of a danger or problem

to make someone aware of something

सूचित करना

English Usage: Please alert me if you see anything unusual.

Hindi Usage: अगर आप कुछ असामान्य देखें तो कृपया मुझे सूचित करें।