flying squad vs squad

flying squad and squad both are nouns.

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

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

flying squad: a mobile group of trained people (police or executives or officials) able to move quickly in the case of emergencies
squad: a cooperative unit (especially in sports)

Other hypernyms of flying squad include team.

flying squad (noun)	squad (noun)
a mobile group of trained people (police or executives or officials) able to move quickly in the case of emergencies	a cooperative unit (especially in sports)
	a smallest army unit
	a small squad of policemen trained to deal with a particular kind of crime