Sarkari Bhoomi vs Sahi Bhoomi

Arre, ek problem hai mere liye. Main ek law student hoon, aur mere papa ne court mein ek case ka argument diya tha, jismein Sarkari Bhoomi aur Sahi Bhoomi ka concept aaya tha. Ab mujhe lagta hai ki yeh dono ek hi cheez hai, lekin mere papa ne kehna tha ki mein kuchh bhi samajh nahi sakta hu agar yeh concept clear nahi hoga. To, aap logon se koi please karein meri madad karein. Kya hai Sarkari Bhoomi aur Sahi Bhoomi ka difference? Maine kahaan kahaan padha hain, lekin abhi bhi confused hoon.