travail vs giving birth

travail and giving birth both are nouns.

Word	Noun	Adjective	Verb	Adverb
travail	Yes	No	Yes	No
giving birth	Yes	No	No	No

As nouns, giving birth is a hypernym of travail; that is, giving birth is a word with a broader meaning than travail:

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

Other hypernyms of travail include birth, birthing, parturition.

travail (noun)	giving birth (noun)
use of physical or mental energy; hard work	the process of giving birth
concluding state of pregnancy; from the onset of contractions to the birth of a child

travail (verb)	giving birth (verb)
work hard