Fiddle-faddle and Small potatoes

Fiddle-faddle noun - Language, behavior, or ideas that are absurd and contrary to good sense.

Small potatoes and fiddle-faddle are semantically related in important topic. In some cases you can use "Small potatoes" instead a noun phrase "Fiddle-faddle".

Fiddle-faddle and small potatoes are semantically related in important topic. You can use "Fiddle-faddle" instead a noun phrase "Small potatoes", if it concerns topics such as trivia.