Quashing vs Mandamus: Kya hai ispe aapki pasandida galti?

Yaar, maine AILET ki taiyari kar rahi hoon aur main khud ko confuse de raha hoon. Kya yehi UPSC ke liye bhi confusion hai? Main soch rahi hoon ki quashing and mandamus ki difference kya hai. Quashing ke baare mein toh pata hai ki yeh wahi hai, magar mandamus ki definition aur application ko samajh nahi aaya. Kabhi-kabhi toh lagta hai ki mandamus bhi wohi case ko reject karta hai, lekin isme wali rules aur procedures alag hoti hain. Please help, kya mandamus mein government ke actions ko review karta hai? Ya iske case mein government ko action karna padta hai?