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.
There are photos of Ayn Rand with one or both of her sisters on page 5 (1912), p. 6 (1910), and p. 10 (1914). Page 30 describes a series of increasingly bizarre strategies [by her family] to assist Rand in realizing her ambition [to be a screenwriter in America] and to safeguard their own survival..