A word cloud is a useful way of drawing students' attention to the vocabulary they will need to use within the course. Any means by which a teacher can get students to use the appropriate terminology in their work should not be ignored and a word cloud is an imaginative way of drawing their attention to the terms they should know about and how they should be spelled.
This point is especially relevant to candidates in external examinations. A good answer stands out if, for example, Josef Goebbels, the Third Reich's chief propagandist, and Tsar Nicholas II are referred to correctly. It indicates a measure of reading around the subject the candidate may have done in order to spell key terms correctly. It points to clear examples of a candidate's own knowledge if the terms are included in the answer but have not appeared in any sources on the paper. And it may tip the balance in a moderator's mind as he or she is deciding between a Level 2 or a Level 3 mark for a particular answer...