What is the difference between knowledge management and Total Quality Management?

Knowledge management:
Comes in general from experience, test environments. This mean knowledge about a product(s), systems is based on experience, test results, etc… that is been collected to provide other people information, how to avoid or solve certain issues or best practice. In general this is for usage.

Quality Management:
Is based on technical information. For example according the tests the material can handle an x amount of weights. But this does not mean how the products acts or respond in real situation.

In general "Quality" is something you demand in the beginning to overcome or satisfy certain needs. In general in a buy in process
And Knowledge is based after usage, the products acts differently in (in the beginning) unknown circumstances, where by you can amend the quality of the product.

If you would specify a product, I could provide you with specific examples.