Could someone make the difference between undergraduation, graduation and post graduation clear?

Naman, under grad is same as graduation, rest all is post grad. But they sometimes also have foundation which may or may not be a part of under grad. Hope that makes it clear. I'd be happy to understand your current stage of progress including academics, courses, hobbies & other interests to help yo

What you undergo after XII is Undergraduation. You become Graduate after 3 or 4 years of your UG program. After becoming Graduate you could purse further studies via Post-Graduate Programs.

Undergraduate, Bachelor & Graduation meaning is the same. They are three, four or five years course after intermediate. Designated as Bachelor of so & so. Post graduation is the course done after graduation that is mostly minimum two years. Designated as Master in so & so.