Pseudoscience refers to anything that's disguised as being scientific but has no basis in science and doesn't adhere to scientific method. See abiogenesis, social Darwinism and naturalism for more on that. Pseudo means fake/false so the term pseudoscience means "fake science" in other words.

Contrary to the other definition, subjects such as Intelligent Design and theology are not science. Intelligent Design is a philosophy, meanwhile theology is its own subject and actually refers to the study of concepts relating to God (i.e arguments for God's existence such as the one's in Aristotle's book titled metaphysics).