Main Difference
The main difference between Drawing and Illustration is that the Drawing is a visual artwork in two-dimensional medium and Illustration is a depiction made by an artist
Drawing
Drawing is a form of visual art in which a person uses various drawing instruments to mark paper or another two-dimensional medium. Instruments include graphite pencils, pen and ink, various kinds of paints, inked brushes, wax colored pencils, crayons, charcoal, chalk, pastels, various kinds of erasers, markers, styluses, and various metals (such as silverpoint). “Digital drawing” is the act of using a computer to draw. Common methods of digital drawing include a stylus or finger on a touchscreen device, stylus-to-touchpad, finger-to-touchpad, or in some cases, a mouse. There are many digital art programs and devices.
A drawing instrument releases a small amount of material onto a surface, leaving a visible mark. The most common support for drawing is paper, although other materials, such as cardboard, plastic, leather, canvas, and board, may be used. Temporary drawings may be made on a blackboard or whiteboard or indeed almost anything. The medium has been a popular and fundamental means of public expression throughout human history. It is one of the simplest and most efficient means of communicating visual ideas. The wide availability of drawing instruments makes drawing one of the most common artistic activities.
In addition to its more artistic forms, drawing is frequently used in commercial illustration, animation, architecture, engineering and technical drawing. A quick, freehand drawing, usually not intended as a finished work, is sometimes called a sketch. An artist who practices or works in technical drawing may be called a drafter, draftsman or a draughtsman.
Illustration
An illustration is a decoration, interpretation or visual explanation of a text, concept or process, designed for integration in published media, such as posters, flyers, magazines, books, teaching materials, animations, video games and films.
The origin of the word “illustration” is late Middle English (in the sense ‘illumination; spiritual or intellectual enlightenment’): via Old French from Latin illustratio, from the verb illustrate.
Drawing (verb)
present participle of draw
Drawing (noun)
A picture, likeness, diagram or representation, usually drawn on paper.
Drawing (noun)
The act of producing such a picture.
Drawing (noun)
Such acts practiced as a graphic art form.
Drawing (noun)
The process of drawing or pulling something.
“Proverb: An official is great in his office as a well is rich in drawings of water.”
Drawing (noun)
An act or event in which the outcome (e.g., designating a winner) is selected by chance in the form of a blind draw, notably of lots; especially such a contest in which a winning name or number is selected randomly by removing (or drawing) it from a container, popularly a hat).
Drawing (noun)
A small portion of tea for steeping.
Illustration (noun)
The act of illustrating; the act of making clear and distinct; education; also, the state of being illustrated, or of being made clear and distinct.
Illustration (noun)
That which illustrates; a comparison or example intended to make clear or apprehensible, or to remove obscurity.
Illustration (noun)
A picture designed to decorate a volume or elucidate a literary work.
Illustration (noun)
A calculated prevision of insurance premiums and returns (life insurance)
Illustration (noun)
a picture illustrating a book, newspaper, etc.
“an illustration of a yacht”
Illustration (noun)
the action or fact of illustrating something
“by way of illustration, I refer to the following case”
Illustration (noun)
an illustrative example
“this accident is a graphic illustration of the disaster that’s waiting to happen”