| 表現 | A more broad word meaning simply, ‘expression.’ Freedom of expression. What the artist was trying to express with this painting. Etc. Is this ever used about idioms? |
| 慣用句 | An idiom. For example, 明日がまちどおし.(’I can’t wait for tomorrow!’) |
| 格言 | A proverb |
| ことわざ | A proverb $$$ |
| 方言 | A somewhat more informal word for dialect- i.e. all the idioms of a particular region. |
| 弁 | Dialect. |