Hey there, 

As per your query I would like to tell you that according to your question. The full forms of GNM is genral nursing and midwifery is 3 and half years diploma course in paramedical. The average tuition fee charged for this course in India ranges between INR 20,000 and 1.5 lakh. This course is 3year diploma which is followed by 6 month internship Program. GNM admission is based upon both Entrance and merit list. 

ANM is stand for auxlliary nursing midwifery. It is 1-3 academic year diploma course. The average tuition fee Charged for this course in India ranges between INR 10,000 upto 5 lakhs.

Affiliation depending upon.varies according to colleges. 

Hopefully it's will be useful to you. 

GOOD LUCK.