trimmings vs appurtenance

trimmings and appurtenance both are nouns.

Word	Noun	Adjective	Verb	Adverb
trimmings	Yes	No	No	No
appurtenance	Yes	No	No	No

As nouns, appurtenance is a hypernym of trimmings; that is, appurtenance is a word with a broader meaning than trimmings:

trimmings: the accessories that normally accompany (something or some activity)
appurtenance: a supplementary component that improves capability

Other hypernyms of trimmings include accessory, add-on, supplement.

trimmings (noun)	appurtenance (noun)
the accessories that normally accompany (something or some activity)	a supplementary component that improves capability
	equipment consisting of miscellaneous articles needed for a particular operation or sport etc.