The terms I carefully had to define while reading Rhetoric of the Image by Roland Barthes:

The linguistic message, which is the caption, the copy, or the title, are two types of messages:
a) The denoted message, which is the literal meaning of the labels on the produce in this case the name of the company, Panzani.
b) The connoted message, which is the sociocultural and ‘personal’ associations drawn from the label or text. For example, the word ‘Panzani’ in the illustration connotes Italianicity.

Iconic Non-coded Messages: The literal Image or denoted message

Under coded iconic messages there are symbolic or connoted message

Anchorage is text that provides the link between the image and the context.

Relay is the interpretation of an image separate from the meaning of the text.