difficult question to answer. Component video cables are coaxial cables.
"coaxial" is a type of cable which consists of a central conductive strand, usually copper, surrounded by an insulator which is, in turn, surrounded by another layer of mesh, foil or some other conductive material. Generally, this ihas an outer insulation as well. Generally, this is 75 ohms impedance for audio and video purposes.
IOW, "coaxial" is a cable TYPE.
It can be used to pass various INFORMATION, or signals. Now, as far as what information these can pass, here's a brief primer.
When outfitted with RCA plugs, this can be used for composite video signals, component video signals, digital audio signals, analog audio signals and pretty much anything else.
When it's fitted with "F" connectors, it's usually used for CATV or OTA antenna signals.
So, does this answer your question, or can you rephrase it to something more meaningful?