To understand or comprehend something.

समझना

English Usage: I finally get what you mean.

Hindi Usage: मैं अंततः समझ गया कि तुम क्या कहना चाहते हो।

To correct or clarify something.

सही करना

English Usage: Let me get this straight; you want us to leave early?

Hindi Usage: मुझे यह सही करने दो; क्या तुम चाहते हो कि हम जल्दी निकलें?