palace vs regime

palace and regime both are nouns.

Word	Noun	Adjective	Verb	Adverb
palace	Yes	No	No	No
regime	Yes	No	No	No

As nouns, regime is a hypernym of palace; that is, regime is a word with a broader meaning than palace:

palace: the governing group of a kingdom
regime: the organization that is the governing authority of a political unit

Other hypernyms of palace include authorities, government.

palace (noun)	regime (noun)
official residence of an exalted person (as a sovereign)	(medicine) a systematic plan for therapy (often including diet)
a large and stately mansion	the organization that is the governing authority of a political unit
a large ornate exhibition hall
the governing group of a kingdom