unit vs work party

unit and work party both are nouns.

Word	Noun	Adjective	Verb	Adverb
unit	Yes	No	No	No
work party	Yes	No	No	No

As nouns, work party is a hyponym of unit; that is, work party is a word with a more specific, narrower meaning than unit:

unit (noun)	work party (noun)
an assemblage of parts that is regarded as a single entity	an organized group of workmen
a single undivided whole
an organization regarded as part of a larger social group
a single undivided natural thing occurring in the composition of something else
any division of quantity accepted as a standard of measurement or exchange
an individual or group or structure or other entity regarded as a structural or functional constituent of a whole