premature labour vs travail

premature labour and travail both are nouns.

Word	Noun	Adjective	Verb	Adverb
premature labour	Yes	No	No	No
travail	Yes	No	Yes	No

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

premature labour: labor beginning prior to the 37th week of gestation
travail: concluding state of pregnancy; from the onset of contractions to the birth of a child

Other hypernyms of premature labour include childbed, confinement, labor, labour, lying-in, parturiency.

premature labour (noun)	travail (noun)
labor beginning prior to the 37th week of gestation	use of physical or mental energy; hard work
	concluding state of pregnancy; from the onset of contractions to the birth of a child

premature labour (verb)	travail (verb)
	work hard