labor vs gestation

labor and gestation both are nouns.

Word	Noun	Adjective	Verb	Adverb
labor	Yes	No	Yes	No
gestation	Yes	No	No	No

labor (noun)	gestation (noun)
productive work (especially physical work done for wages)	the conception and development of an idea or plan
any piece of work that is undertaken or attempted	the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus
a social class comprising those who do manual labor or work for wages	the period during which an embryo develops (about 266 days in humans)
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

labor (verb)	gestation (verb)
undergo the efforts of childbirth
work hard
strive and make an effort to reach a goal