What the differences of these ??

first answer
Internal control is a system by which an organisation should work as its should work.
what does this mean?its Mean that organisation should have controls for its operation to run smoothly and efficiently ,org without internal control cannot achieve its organisational targets and cannot get required result if no internal controls are there ,its a common sense that org consists large structure and many people level’s(hierarchy),therefore it is needed for org to have internal controls .Major corporate scandal have occurred because poor internal controls one of the famous scandal is Enron

2nd Answer:
you can understand this terminology as control system is a system that has been placed by the org to control its operation and run company in an effective manner

Example of above questions
Co has an issue with a good supplied by supplier that goods do not match with the quantity that ordered by company
now consider your question ,Some one came to company and suggest that it should have a INTERNAL CONTROL SYSTEM for checking and confirming the good supplied by Supplier and simultaniously he suggest a CONTROL SYSTEM that Co. should prepare a Good Receiving Note(GRN) for Ensuring quantity that ordered.

this is very simple illustration,I hope you will understand