propagation vs facts of life

propagation and facts of life both are nouns.

Word	Noun	Adjective	Verb	Adverb
propagation	Yes	No	No	No
facts of life	Yes	No	No	No

As nouns, facts of life is a hypernym of propagation; that is, facts of life is a word with a broader meaning than propagation:

propagation: the act of producing offspring or multiplying by such production
facts of life: the sexual activity of conceiving and bearing offspring

Other hypernyms of propagation include breeding, procreation, reproduction.

propagation (noun)	facts of life (noun)
the act of producing offspring or multiplying by such production	the sexual activity of conceiving and bearing offspring
the spreading of something (a belief or practice) into new regions
the movement of a wave through a medium