Used to indicate a condition or supposition
यदि (Yadi)
English Usage: If you want to come, let me know.
Hindi Usage: यदि तुम आना चाहते हो, तो मुझे बताओ।
Used to introduce a conditional clause
English Usage: If it rains, we will stay indoors.
Hindi Usage: यदि बारिश होती है, तो हम घर के अंदर रहेंगे।