Capitalism: This is an economic system in which trade, industry, and means of production are largely or entirely privately owned and operated for profit; this system is dominated by the bourgeoisie.
Industrial Revolution: This was a period from 1760 to 1840 where major changes in agriculture, manufacturing, mining, transport, and technology had a profound effect on socioeconomic conditions; it led to rise of bourgeoisie as dominant class.
Marxism: This is a socio-political theory that presents capitalism through a critique of its real-life practices arguing for its replacement with socialism; Karl Marx coined term "bourgeoisie" to describe capitalist class exploiting working class (proletariat).