Hello Safal,

Both are governments approved body,  AICTE is established for development of technical education system throughout the country. Where as the University Grants Commission of India is a Union government body that provides funds for government-recognised universities and colleges. It is the body that provides recognition for universities in India. UGC is University Grants Commission and not related to technical education alone. All state universities and some other universities are UGC approved. It grants funds for research to institutions and universities. AICTE is council for technical education only. Well both are good. 

All the best.