Is there a full list of the names & abbreviation of electronic components
Is there a full list of the names and abbreviation of electronic components?


That would require a) full knowledge of all possible components and b) full cooperation of all engineers ever. So, no, such a list does not exist.

There's a few standards, but your board markings agree with none that I would be aware of. So, we can only help you "acutely" map the letters for this very board, not for other boards to types of devices:


Q is typically associated with transistors. There's multiple legend about where that hails from. It's probably a thing from vacuum tube times.
IC is just "integrated circuit". That can refer to anything from a single transistor with a biasing resistor in the same package, to a billion-gates CPU. In your 4-pin case, probably either such a self-biased transistor, a diode pair, or a linear voltage regulator, but it might also be a switch-mode supply, a or some other power electronics.
OJ is "orange juice". The "O" is probably a zero, and it's probably supposed to mean "0 Ω resistor or jumper", which "explains" the J
X is for Crystal
And that's exactly what the silver component is, a crystal oscillator. "SC" stands for "stress cut", and describes in which direction the piezoelectric crystal inside the metal dome has been sliced. 8 probably means "8 MHz", that's a common resonant frequency.