heterogenesis vs alternation of generations

heterogenesis and alternation of generations both are nouns.

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

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

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

Other synonyms of heterogenesis include xenogenesis.

heterogenesis (noun)	alternation of generations (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