The crossword solutions for the term 'Neon or Nitrogen' are GAS, which is an acronym for 'gaseous state'. Gases are substances that exist in a state of matter where particles are spread out and have no definite shape or volume. Neon and nitrogen are both gases at room temperature and pressure. Neon is a noble GAS, while nitrogen is a diatomic molecule. Both gases are colorless, odorless, and tasteless.