Information is that which informs.

In other words, it is the answer to a question of some kind.

It is thus related to data and knowledge, as data represents values attributed to parameters, and knowledge signifies understanding of real things or abstract concepts.

As it regards data, the information's existence is not necessarily coupled to an observer (it exists beyond an event horizon, for example), while in the case of knowledge, the information requires a cognitive observer.

News is information about current events.

Journalists provide news through many different media, based on word of mouth, printing, postal systems, broadcasting, electronic communication, and also on their own testimony, as witnesses of relevant events.

Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.

A review is an evaluation of a publication, service, or company such as a movie (a movie review), video game (video game review), musical composition (music review of a composition or recording), book (book review); a piece of hardware like a car, home appliance, or computer; or an event or performance, such as a live music concert, play, musical theater show, dance show, or art exhibition.

In addition to a critical evaluation, the review's author may assign the work a rating to indicate its relative merit.

More loosely, an author may review current events, trends, or items in the news.

A compilation of reviews may itself be called a review.

The New York Review of Books, for instance, is a collection of essays on literature, culture, and current affairs.

National Review, founded by William F. Buckley, Jr., is an influential conservative magazine, and Monthly Review is a long-running socialist periodical.

An article is a written work published in a print or electronic medium.

It may be for the purpose of propagating news, research results, academic analysis or debate.