alternation of generations vs heterogenesis

alternation of generations and heterogenesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
alternation of generations	Yes	No	No	No
heterogenesis	Yes	No	No	No

As nouns, alternation of generations and heterogenesis are synonyms defined as:

alternation of generations and heterogenesis: the alternation of two or more different forms in the life cycle of a plant or animal

Other synonyms of alternation of generations include xenogenesis.

alternation of generations (noun)	heterogenesis (noun)
the alternation of two or more different forms in the life cycle of a plant or animal	the alternation of two or more different forms in the life cycle of a plant or animal