One possibility is that it stands for the Latin word "celeritas" meaning speed.
C = Speed of light, C2 =speed of light squared
Velocity.
Accelerate.
year-light or light Years
According to Wikipedia, the symbol c, for the speed of light, originates from the Latin word celeritās, for speed.
"Mercurial" is derived from Mercury, the god of Speed, Changeability, and Mischief. The speed connotation has declined a good bit, and the word now indicates mischief and changeability.
The answer will depend on what you mean by "tomakaks" which is not a recognised word.
Luster
The speed of light is only the speed limit for information. There are many experiments showing that we can made "non-information" travel faster than the speed of light. For example, in quantum mechanics the phase velocity is faster than the speed of light but the group velocity is slower (or equal to) the speed of light. Also, if two light waves are traveling at the speed of light and they interact, e.g. they constructively interfere with each other, the interference can travel faster than the speed of light. Once again, the speed limit of light is only on information. The word "information" is sometimes tricky to define though.
c = the speed of light.
The Gospel of John 1:1 -5, " In the beginning was the Word (Jesus) and the Word (Jesus) was with God, and the Word (Jesus) was God. He was in the beginning with God. All things were made through Him, and without Him nothing was made that was made. In Him was life, and the life was the light of men. And the light shines in the darkness, and the darkness did not comprehend it".
The line is : the word ; Equal