what is wave give prper answer and explaination for my question

In physics a wave is an oscillation accompanied by a transfer of energy that travels through a medium (space or mass).  frequency refers to the addition of time. Wave motion transfers energy from one point to another, which displace particles of the transmission medium–that is, with little or no associatedmass  transport. Waves consist, instead, of oscillation or vibrations(of a physical quantity), around almost fixed locations.

@ ajith 
wave can be defined as a type of disturbances that are produced in a certain kind of medium . 
there are two kind of waves . 
1- longitudional wave 
2- transverse wave 
HOPE IT CLEARS 
ALL THE BEST