Is there any difference between Quality Management and Quality Unit?

the Quality system is applied in all procedures in company , so the Quality management is senior management that responsibility on general policy of quality and planning for quality , that according to analysis provided from quality unit , 

I understand that unit means good or product. Base on it yes there is a difference the quality management: the scope of quality unit or quality product is the output of the operation and the accountability generally will be on the operation and quality control stuff meanwhile the scope of the quality management is the total organization ( including the verification of quality product process) and the accountability shall be on the top management  

Quality Management: Team of Quality engineers from senior maangement who devise policies, procedures, strategies and quality plans for the fucntioning of various Quality Units in a enterprise.

Quality unit: For Ex: Incoming quality inspection department, is an ideal example for one of the quality unit in a large enterprise. similarly Metrology, Production quality also form various quality units of a quality management in a organisation. Hope this answer serves.

yes there is obvious difference, quality management reffers to a border term describing all the techniques involved in quality management that focus quality policies while quality unit is fudamental unit of a system that bulids up a quality management system.

Quality Unit: Any department that contributes to assuring product quality and compliance within an organisation.

Quality Management: A set of policies and procedures written in compliance with applicable regulations, standards and the company quality policy with objectives to establish and maintain a companies compliance level and product quality. 

do you mean as in Organisation structure?

any who. the Quality Management System is applied by all the organisation units. and usually monitored by the Quality Units.

also, setting/plannig the Quality Management system can be with Quality Unit or any other team.

I guess I'm just into the PDCA cycle