appurtenant vs ancillary

appurtenant and ancillary both are adjectives.

Word	Noun	Adjective	Verb	Adverb
appurtenant	No	Yes	No	No
ancillary	No	Yes	No	No

As adjectives, appurtenant and ancillary are synonyms defined as:

Other synonyms of appurtenant include accessory, adjunct, adjuvant, auxiliary.

appurtenant (adjective)	ancillary (adjective)
furnishing added support	furnishing added support