Coherence is an interrelated sentences in discourse. Coherence also interrelationships between elements in a sentence. As stated by Beaugrande and Dressler (1981:84) that coherence is interrelated sentences explicitly and ambiguity so as to explain the actual text meaning. Meaning is used to refer the potential of language expression (or other marks) to represent and convey knowledge about the true meaning. A text will “make sense” because of the continuity of senses between the knowledge functioned by the expression of the text. A text “does not make sense” is the one in which the receiver can find the continuity of text, because there is usually a serious mismatch between the configuration of concepts and relationships between what is expressed and the recipient’s world knowledge.

In determining the continuity of the senses as the basis of coherence, into mutual access and relevance in the configuration concepts and relations. Configuring the underlying text is a textual world, which may or may not agree with the version that is still “real world”, i.e., that the version of the human situation seemed to be legitimated by a community or social group. Note, however, that the textual world contains more than a sense of the expression in the text surface: cognitive processes accounted for a number of common sense knowledge derived from the expectations and experience of the participants about the organization of events and situations.  Therefore, even though the sense of the expression is the contribution of the most obvious and accessible to the meaningfulness of the text, they can not be the whole picture. Halliday and Hasan (in Mulyana 2005: 31) asserts that the discourse structure is basically not a syntactic structure, but the structure of semantics, the semantic sentence which contains propositions. For some sentences will only be a long discourse there is a relationship of meaning (sense) inter-sentences themselves.

It can be concluded that the relationship of coherence is a series of facts and ideas which are arranged logically and reasonably. Coherence can occur implicitly as it relates to the field of meaning which requires interpretation. In addition, understanding the relationship of coherence can be reached by way of concluding propositions on the interrelated discourse. Cohesion occurs explicitly when stated by the form of coherence marker interrelated sentences. The connection marker serves to connect the sentence and add the clarity to the interrelated sentences in a discourse.

Between cohesion and coherence, at a glance, almost has similar markers for some aspects which are on the cohesion is a marker on the aspects of coherence. However, based on the above description, between these two aspects can be seen the difference in the following table:

• There are two types of lexical cohesion that support the integrity of discourse other than grammatical cohesion. They are the lexical cohesion (repetition) and Collocation.
• Repetition of words (reiteration) is restating that appears in the next sentence with a direct repetition or confirmation of the meaning by exploiting the relationship of meaning.
• In the following two examples are lexical cohesion by providing a repetition on synonym element.

  (1) The meeting commenced at six thirty. But from the moment it began, it was clear that all was not well.

  (2) The meeting commenced at six thirty; the storm began at eight.