Patois and Set phrase

Patois noun - The special terms or expressions of a particular group or field.

Set phrase and patois are semantically related In some cases you can use "Set phrase" instead a noun "Patois".

Set phrase noun - An expression whose meanings cannot be inferred from the meanings of the words that make it up.

Patois and set phrase are semantically related in idiom topic. Sometimes you can use "Patois" instead a noun phrase "Set phrase", if it concerns topics such as turn of phrase.