Condensed matter physics is the area of physics dealing with condensed phases of matter and their physical properties. Condensed phases of matter include common one like liquids and solids as well as more exotic ones like superconductors and superfluids. The goal of condensed matter physics is to understand how condensed phases of matter behave.
The most commonly known types of condensed matter are liquids and solids. While there are other types of condensed matter are they tend to be a form of liquid or solid. In fact many of these types of condensed matter are not exclusive and object can some time exist in more than one of these states at the same time.
Condensed matter physics is basically the physics of liquids and solids. It studies the properties of different types of liquids and solids and the transitions that occur between them. As simple as this sounds it produces a lot of interesting results and technologies. In fact many of the parts of the computer you are reading this one of their origins in Condensed matter physics