mobocracy vs form of government

mobocracy and form of government both are nouns.

Word	Noun	Adjective	Verb	Adverb
mobocracy	Yes	No	No	No
form of government	Yes	No	No	No

As nouns, form of government is a hypernym of mobocracy; that is, form of government is a word with a broader meaning than mobocracy:

mobocracy: a political system in which a mob is the source of control; government by the masses
form of government: the members of a social organization who are in power

Other hypernyms of mobocracy include political system.

mobocracy (noun)	form of government (noun)
a political system in which a mob is the source of control; government by the masses	the members of a social organization who are in power