metagenesis vs digenesis

metagenesis and digenesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
metagenesis	Yes	No	No	No
digenesis	Yes	No	No	No

As nouns, metagenesis and digenesis are synonyms defined as:

metagenesis and digenesis: alternation of sexual and asexual generations

metagenesis (noun)	digenesis (noun)
alternation of sexual and asexual generations	alternation of sexual and asexual generations