Idiomatic expression and Idioms

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

Idioms and idiomatic expression are semantically related. In some cases you can replace term "Idioms" with "Idiomatic expression", this terms are similar.

Idiomatic expression and idioms are semantically related. Sometimes you can use "Idiomatic expression" instead a noun "Idioms".