third house vs political entity

third house and political entity both are nouns.

Word	Noun	Adjective	Verb	Adverb
third house	Yes	No	No	No
political entity	Yes	No	No	No

As nouns, political entity is a hypernym of third house; that is, political entity is a word with a broader meaning than third house:

third house: an interest group that tries to influence legislators or bureaucrats to act in their favor, typically through lobbying
political entity: a unit with political responsibilities

Other hypernyms of third house include interest, interest group, political unit.

third house (noun)	political entity (noun)
an interest group that tries to influence legislators or bureaucrats to act in their favor, typically through lobbying	a unit with political responsibilities