Confusion regarding order status

Hi. I am struggling to understand the meaning of different elements of an order in my hospital's EHR.

Page: EPR > All Orders

Question: What is the difference between Start Date and Date Executed and Order End Date? If an order was started on Monday and executeed on Tuesday.. does this mean the patient received the order on Monday or Tuesday? and what is End date?

Also, how do I interpret order status? What is the difference between discontinued, verified, and executed?

Also, some  orders have a green / red / yellow bar to their left, that continues as a line under that row. What does that mean?

Thanks in advance.