Vocabulary mind maps are also known as word maps or spidergrams, and are organised in a way that shows groupings or relationships between the words.
Example
The teacher writes a list of words based around the topic of food on the board. Learners organise the words in a mind map and then compare ideas on how they have grouped words and related them.
In the classroom
Mind maps are often used as a tool in the planning stage for writing exercises, as learners can structure ideas and discuss how they are related.
Further links:
https://www.teachingenglish.org.uk/article/using-mind-maps-develop-writing
https://www.teachingenglish.org.uk/article/graphic-organisers
https://www.teachingenglish.org.uk/article/planning-a-writing-lesson