Neon and Argon are both gases that are found in the Earth's atmosphere. Neon is a noble gas with the chemical symbol Ne, while Argon is a noble gas with the chemical symbol Ar. Both gases are colorless, odorless, and non-flammable. They are both used in a variety of applications, such as lighting, welding, and refrigeration. Neon is also used in advertising signs, while Argon is used in lasers and fluorescent lights.