labor pool vs proletariat

labor pool and proletariat both are nouns.

Word	Noun	Adjective	Verb	Adverb
labor pool	Yes	No	No	No
proletariat	Yes	No	No	No

As nouns, proletariat is a hypernym of labor pool; that is, proletariat is a word with a broader meaning than labor pool:

labor pool: the source of trained people from which workers can be hired
proletariat: a social class comprising those who do manual labor or work for wages

Other hypernyms of labor pool include labor, labour, working class.

labor pool (noun)	proletariat (noun)
the source of trained people from which workers can be hired	a social class comprising those who do manual labor or work for wages