What does marxist and engels mean?

Karl Marx and Friedrich Engels were the men who developed the political ideology known as Communism.

There is no meaning to the phrase "marxist and engels." The words are incompatible with one another, because the word "marxist" is the type of person who espouses the philosophies of Karl Marx whereas the word "engels" is the name of the person who collaborated with Karl Marx in developing the historical and economic theories of communism.