unit vs task force

unit and task force both are nouns.

Word	Noun	Adjective	Verb	Adverb
unit	Yes	No	No	No
task force	Yes	No	No	No

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

unit (noun)	task force (noun)
an assemblage of parts that is regarded as a single entity	a temporary military unit formed to accomplish a particular objective
a single undivided whole	a semipermanent unit created to carry out a continuing task
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