parturiency vs parturition

parturiency and parturition both are nouns.

Word	Noun	Adjective	Verb	Adverb
parturiency	Yes	No	No	No
parturition	Yes	No	No	No

As nouns, parturition is a hypernym of parturiency; that is, parturition is a word with a broader meaning than parturiency:

parturiency: concluding state of pregnancy; from the onset of contractions to the birth of a child
parturition: the process of giving birth

Other hypernyms of parturiency include birth, birthing, giving birth.

parturiency (noun)	parturition (noun)
concluding state of pregnancy; from the onset of contractions to the birth of a child	the process of giving birth