One cannot not communicate This axiom basically says that even if you are not actually talking, you are still communicating. Nonverbals are a huge part of communication. Even if you are attempting to avoid speaking, you are still giving off nonverbals. Examples could be facial expressions, the way you are sitting, or your silence in general. Nonverbal communication, for example, is classified as anological by Watzlawick.
Language is considered to be digital.
A few quick examples can make the distinction between content and relationship more clear. If content is what is said, then relationship is how it is said. If content is computer data, then relationship is the computer program. Basically, the content and relationship make up a communication sequence. The nature of the relationship depends on how both parties punctuate the communication sequence This axiom describes how each person perceives, or punctuates, a communication sequence.