Manhattan Project vs labour

Manhattan Project and labour both are nouns.

Word	Noun	Adjective	Verb	Adverb
Manhattan Project	Yes	No	No	No
labour	Yes	No	Yes	No

Manhattan Project (noun)	labour (noun)
code name for the secret United States project set up in 1942 to develop atomic bombs for use in World War II	productive work (especially physical work done for wages)
a former United States executive agency that was responsible for developing atomic bombs during World War II	any piece of work that is undertaken or attempted
	a social class comprising those who do manual labor or work for wages
	an organized attempt by workers to improve their status by united action (particularly via labor unions) or the leaders of this movement
	concluding state of pregnancy; from the onset of contractions to the birth of a child

Manhattan Project (verb)	labour (verb)
	undergo the efforts of childbirth
	work hard
	strive and make an effort to reach a goal