travail vs sweat

travail and sweat both are nouns.

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

As nouns, travail and sweat are synonyms defined as:

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

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

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