Trojan horse vs social unit

Trojan horse and social unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
Trojan horse	Yes	No	No	No
social unit	Yes	No	No	No

As nouns, social unit is a hypernym of Trojan horse; that is, social unit is a word with a broader meaning than Trojan horse:

Trojan horse: a subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst
social unit: an organization regarded as part of a larger social group

Other hypernyms of Trojan horse include unit.

Trojan horse (noun)	social unit (noun)
a subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst	an organization regarded as part of a larger social group