Self-synchronizing code

Self-synchronizing code is a special kind of line code that is easy to "synchronize" (having two computers "stay in time with" each other when "communicating"). Code like this happens in telecommunications.
Information on computers is made from binary bits - 0's and 1's (OFFs and ONs). This means that when a computer is being "communicated to", it must "listen" for bits at the correct speed by staying "synchronized", or else there will be a misunderstanding. A computer needs to notice misunderstandings immediately, so that wrong things don't happen.
Confusion can happen when two signals combine or misalign, so it's helpful for different "words" in a code to be "unique" from each other.
Example.
Code A: self-synchronizing.
Imagine the language only has the words and .
Code B "is" self-synchronizing, because its "words" are very different from each other, and "hard" to confuse with each other.
Code B: not self-synchronizing.
Imagine the language has the words , , and .
Code B is "not" self-synchronizing, because its "words" are too similar to each other, and "easy" to confuse with each other.