Never-never land and Seventh heaven

Never-never land noun - An often imaginary place or state of utter perfection and happiness.

Seventh heaven and never-never land are semantically related. In some cases you can use "Seventh heaven" instead a noun phrase "Never-never land".

Seventh heaven noun - A state of overwhelming usually pleasurable emotion.

Never-never land and seventh heaven are semantically related. Sometimes you can use "Never-never land" instead a noun phrase "Seventh heaven".