Monocoque can act as a noun and an adjective. A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc. The adjective is the word that accompanies the noun to determine or qualify it.
Only the most powerful speedsters can: 1  Run fast enough to approach the speed of light. 2  This feat needs complete control over a Flash's speed aura, molecular control and endurance enough to enter the Speed Force dimension.
Flash can go faster on earth because he is protected by the speed force from air resisitance and friction. Superman has to force his way through angry air molecules, and endure extreme heat. In space Superman could exceed Flash's speed; for example when he caught up with light escaping earth, and took a photo of it.