government vs allegiant

government is a noun but allegiant is not a noun.

Word	Noun	Adjective	Verb	Adverb
government	Yes	No	No	No
allegiant	No	Yes	No	No

government (noun)	allegiant (noun)
the act of governing; exercising authority
(government) the system or form by which a community or other political unit is governed
the study of government of states and other political units
the organization that is the governing authority of a political unit

government (adjective)	allegiant (adjective)
	steadfast in devotion (especially to your lawful monarch or government)