A word used to refer to a specific day, usually signifying 'today'.

आज

English Usage: I will finish the project today.

Hindi Usage: मैं आज परियोजन को पूरा करूँगा।

Used to denote the current time period or day.

आज

English Usage: We are going out today for dinner.

Hindi Usage: हम आज रात के खाने के लिए बाहर जा रहे हैं।