Hello Joshua !!

NEET Pg and NEET Ug are completely different. Though they both are for medical coourses , NEET Ug is for graduation degree where student can get into colleges offering MBBS,BDS,AYUSH seats . The upper age limit as been removed and candidate can appear any number of times .

NEET Pg is the entrance test for post-graduation where you can get MD degree after doing specialization. Without Ug , Pg can not be done.

All the best.

Hope this helps .