Or 'Classical Mechanics' as most university courses refer to it. Newtonian mechanics is an outdated name for simplified mechanics that approximate accurately for "normal" physics situations, at least normal for a human's daily life at this point in time.

The opposite end of this spectrum is Relativistic Mechanics, which takes over when the approximations fall away at realms deviating far from normal, such as high mass systems, those at speeds approaching C, or Quantum Mechanics for small scale like atomic interactions.