What is the difference between and NDA (non disclosure agreement) and a NCA (non compete agreement)?

In the Merger & Acquisition world, there are terms very much used in contracts.

In essence, NCA (non-compete) means that the owner of a business being divested will not enter that same line of business or product line after he sells the company.

NDA - (Non-disclosure) is just a clause or a contract restricting the parties involved on what's public information and what should be kept confidential.