What's the difference between under, below, beneath, and underneath?

Answer to the question "What's the difference between "under", "below", "beneath", and "underneath"? " for English language learners

under-below-beneath-underneath-comparision - Much English

Under, Below, Beneath and Underneath

A Guide to Using Prepositions of Place Accurately: Distinguishing Above, Over, On, Below, Under, Beneath, and Underneath

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Beneath - Wiktionary, The Free Dictionary

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Above & Over: Examples

What is the difference between beneath/under/below? Are they

Down - under - below - beneath - underneath