restraint of trade vs restraint

restraint of trade and restraint both are nouns.

Word	Noun	Adjective	Verb	Adverb
restraint of trade	Yes	No	No	No
restraint	Yes	No	No	No

As nouns, restraint is a hypernym of restraint of trade; that is, restraint is a word with a broader meaning than restraint of trade:

restraint of trade: any act that tends to prevent free competition in business
restraint: the act of controlling by restraining someone or something

restraint of trade (noun)	restraint (noun)
any act that tends to prevent free competition in business	the act of controlling by restraining someone or something
	a device that retards something's motion
	discipline in personal and social activities
	lack of ornamentation
	a rule or condition that limits freedom
	the state of being physically constrained