Prāṇāyāma—breath control used in yoga practice, especially aṣṭāṅga-yoga (one of the eight parts of the aṣṭanga-yoga system).

Pranayama-breath control used in yoga practice, especially astahga-yoga (one of the eight parts of the astanga-yoga system).
 

Link to this page: https://prabhupadabooks.com/glossary/p/pranayama-breath-control-used-in-yoga-practice-especially-as