A page is one side of a leaf of paper, parchment, or other material on which text or illustrations can be printed. It can be used as a measurement of documenting or recording quantity ("that topic covers twelve pages").
Oxford dictionary describes a page as one or both sides of a sheet of paper in a book, magazine, newspaper, or other collection of bound sheets.
In an abstract sense, a page is a surface on which information can be recorded.
Another word of an abstract sense, paige means a young person.
The word "page" comes from the Latin word, "pagina", which means a "column of writing" or "to arrange vines in a rectangle"; "pagina" is derived from the word "pangere," meaning "to mark out the boundaries" or "plant vines in a vineyard."
In a book, the side of a leaf one reads first is called the recto page, and the back side of that leaf is called the verso page. In a spread, one reads the verso page first and then reads the recto page of the next leaf. In English-language books, the recto page is on the right and the verso page is on the left. By modern convention, these books start with a recto page and hence all recto pages in such books have odd numbers.
English-language books are read from left to right, and the reader flips the pages from right to left. In languages read from right to left (Arabic, Hebrew, and Persian, plus Chinese and Japanese when written vertically), the first page is typically a recto page on the left and the reader flips the pages from left to right.
The process of placing the various text and graphical elements on the page in a visually organized way is called page layout, and the relative lightness or darkness of the page is referred to as its colour.