DISTINCTIONS
In the course of his investigation of speaker meaning and linguistic meaning, Grice introduced a number of interesting distinctions. For example, he distinguished between four kinds of content: 
 Encoded content is the actual meaning attached to certain expressions, arrived at through investigation of definitions and making of literal interpretations.
 Non-encoded content are those meanings that are understood beyond an analysis of the words themselves, i.e., by looking at the context of speaking, tone of voice, and so on.
 Truth-conditional content are whatever conditions make an expression true or false.
 Non-truth-conditional content are whatever conditions that do not affect the truth or falsity of an expression.