spontaneous vs self-generated

spontaneous and self-generated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
spontaneous	No	Yes	No	No
self-generated	No	Yes	No	No

As adjectives, spontaneous and self-generated are synonyms defined as:

spontaneous and self-generated: happening or arising without apparent external cause

spontaneous (adjective)	self-generated (adjective)
happening or arising without apparent external cause	happening or arising without apparent external cause
said or done without having been planned or written in advance	originating from the self