The tag methods does not have a wiki summary, but (based on the name and the first portion of the four questions so tagged) it seems likely it should be a synonym for technique (which tag is used by 82 questions). literary-tools (2 questions) might also be a synonym, but it might be addressing a specific subset of technique (one of the two questions is also tagged with technique).
If they are not synonyms, someone who knows the difference should create wiki summaries.