accession accessory accident accidental accommodation accompaniment addenda addendum additament addition additive additory additum adjunct adjuvant advantage amenity annex annexation appanage appendage appendant appendix appliance appointment appurtenant aspect attachment augment augmentation authority auxiliary birthright circumstance claim coda collateral complement component concomitant conjugal right constituent contents contingency contingent continuation convenience corollary demand detail divine right droit due element equipment extension extra extrapolation facility factor faculty feature fixings fixture furnishings furniture happenstance inalienable right incidental increase increment inessential ingredient integrant interest item makings mere chance natural right nonessential not-self offshoot other part part and parcel pendant power prerogative prescription presumptive right pretense pretension proper claim property right reinforcement right secondary side effect side issue specialty subsidiary superaddition supplement tailpiece title undergirding unessential vested interest vested right