royalism vs adherence

royalism and adherence both are nouns.

Word	Noun	Adjective	Verb	Adverb
royalism	Yes	No	No	No
adherence	Yes	No	No	No

As nouns, adherence is a hypernym of royalism; that is, adherence is a word with a broader meaning than royalism:

royalism: adherence or attachment to a monarchy or to the principle of monarchal government
adherence: faithful support for a cause or political party or religion

Other hypernyms of royalism include adhesion, attachment.

royalism (noun)	adherence (noun)
adherence or attachment to a monarchy or to the principle of monarchal government	faithful support for a cause or political party or religion
	the property of sticking together (as of glue and wood) or the joining of surfaces of different composition