squad vs battery

squad and battery both are nouns.

Word	Noun	Adjective	Verb	Adverb
squad	Yes	No	No	No
battery	Yes	No	No	No

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

squad (noun)	battery (noun)
a cooperative unit (especially in sports)	an assault in which the assailant makes physical contact
a smallest army unit	the heavy fire of artillery to saturate an area rather than hit a specific target
a small squad of policemen trained to deal with a particular kind of crime	a device that produces electricity; may have several primary or secondary cells arranged in parallel or series
	a series of stamps operated in one mortar for crushing ores
	a collection of related things intended for use together
	group of guns or missile launchers operated together at one place
	a unit composed of the pitcher and catcher