sweat vs travail

sweat and travail both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweat	Yes	No	Yes	No
travail	Yes	No	Yes	No

As nouns, sweat and travail are synonyms defined as:

Other synonyms of sweat include effort, elbow grease, exertion.

sweat (noun)	travail (noun)
use of physical or mental energy; hard work	use of physical or mental energy; hard work
salty fluid secreted by sweat glands	concluding state of pregnancy; from the onset of contractions to the birth of a child
condensation of moisture on a cold surface
agitation resulting from active worry

sweat (verb)	travail (verb)
excrete perspiration through the pores in the skin	work hard