firing squad vs squad

firing squad and squad both are nouns.

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

As nouns, squad is a hypernym of firing squad; that is, squad is a word with a broader meaning than firing squad:

firing squad: a squad formed to fire volleys at a military funeral or to carry out a military execution
squad: a smallest army unit

firing squad (noun)	squad (noun)
a squad formed to fire volleys at a military funeral or to carry out a military execution	a cooperative unit (especially in sports)
	a smallest army unit
	a small squad of policemen trained to deal with a particular kind of crime