spontaneous generation vs autogeny

spontaneous generation and autogeny both are nouns.

Word	Noun	Adjective	Verb	Adverb
spontaneous generation	Yes	No	No	No
autogeny	Yes	No	No	No

As nouns, spontaneous generation and autogeny are synonyms defined as:

spontaneous generation and autogeny: a hypothetical organic phenomenon by which living organisms are created from nonliving matter

Other synonyms of spontaneous generation include abiogenesis, autogenesis.

spontaneous generation (noun)	autogeny (noun)
a hypothetical organic phenomenon by which living organisms are created from nonliving matter	a hypothetical organic phenomenon by which living organisms are created from nonliving matter