This article completes the survey of mistakes and their causes which affect the presentation of physics and other sciences in schools and in popular science. It is concerned with: commonly used but unsound analogies, diagrams which have been copied carelessly from various sources, misuse of scientific terminology or the use of unsuitable popular terms, the effects of words having different meanings or quantities being given different values in different times and places. As so much understanding depends on finding the relationships between ideas, a section gives illustrative examples of misleading association where there is inadequate basic knowledge