unit vs family

unit and family both are nouns.

Word	Noun	Adjective	Verb	Adverb
unit	Yes	No	No	No
family	Yes	No	No	No

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

unit (noun)	family (noun)
an assemblage of parts that is regarded as a single entity	primary social group; parents and children
a single undivided whole	people descended from a common ancestor
an organization regarded as part of a larger social group	a social unit living together
a single undivided natural thing occurring in the composition of something else	(biology) a taxonomic group containing one or more genera
any division of quantity accepted as a standard of measurement or exchange	a collection of things sharing a common attribute
an individual or group or structure or other entity regarded as a structural or functional constituent of a whole	an association of people who share common beliefs or activities
	a loose affiliation of gangsters in charge of organized criminal activities
	a person having kinship with another or others