A pronoun is a word that takes the place of a noun. Examples: he, she, it, they, someone, who. Pronouns can do all of the things that nouns can do. They can be subjects, direct objects, indirect objects, object of the preposition, and more. Heck, the word pronoun even has the word noun in it! Let's look at a few examples. Erik Weihenmayer is a blind mountain climber.
On October 1, 1945, Project RAND was set up under special contract to the Douglas Aircraft Company and began operations in December 1945, expending a total of $640 in its first month of operation.
The Bulletin of the Atomic Scientists was founded in 1945 by scientists who created the atomic bomb as part of the Manhattan Project and wanted to raise awareness about the dangers of nuclear technology. The Doomsday Clock first appeared on a cover of the magazine in 1947, with its hands set at 11:53 p.m.