What does physics mean

Physics comes from an ancient Greek word which translates to "knowledge of nature". Physics is the science that studies all things involving energy, matter, and their interaction.  Physics tries to answer universe's core questions through a series of observation and experimentation. Usually, physicists deal with theories and conduct researchers, trying to understand the world and the universe. However, some of them would apply these theories in creating technological innovation; thus, gaining practical value in the present human world. Knowledge on the subject proves to have advance society.