What is plagiarism? What is graffiti? What is perspective? What's the difference between sketch and sketch?

Copy: to imitate writing or painting as it is.

Graffiti: A metaphor for poor or careless writing (often used as a polite expression)

Perspective: a method or technique to depict the spatial relationship of natural objects on a plane or surface.

Sketch: a simple drawing with lines and no color.

Sketch: while observing an object, draw quickly with simple lines.

It's too late to regard study as a hobby, and it's too late to major!