let alone vs leave alone

let alone and leave alone both are verbs.

Word	Noun	Adjective	Verb	Adverb
let alone	No	No	Yes	Yes
leave alone	No	No	Yes	No

As verbs, let alone and leave alone are synonyms defined as:

let alone and leave alone: leave unchanged or undisturbed or refrain from taking

Other synonyms of let alone include leave, leave behind.

let alone (verb)	leave alone (verb)
leave unchanged or undisturbed or refrain from taking	leave unchanged or undisturbed or refrain from taking

let alone (adverb)	leave alone (adverb)
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