Pseudo Elements versus Pseudo Classes

Question

What is the difference between pseudo elements and pseudo classes?

Answer 1

https://stackoverflow.com/questions/8069973/what-is-the-difference-between-a-pseudo-class-and-a-pseudo-element-in-css#11701951

Answer 2

Pseudo class uses single colon(:) while Pseudo element uses double colon(::)

Answer 3

Thank you for the prompt response.