auto-suggestion vs self-suggestion

auto-suggestion and self-suggestion both are nouns.

Word	Noun	Adjective	Verb	Adverb
auto-suggestion	Yes	No	No	No
self-suggestion	Yes	No	No	No

As nouns, auto-suggestion and self-suggestion are synonyms defined as:

auto-suggestion and self-suggestion: a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s

Other synonyms of auto-suggestion include autosuggestion.

auto-suggestion (noun)	self-suggestion (noun)
a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s	a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s