noun
A person who accompanies someone, often in formal, legal, or medical settings, such as a court-appointed attendant or a hospital companion.
裁判所は未成年の被告人に付添人を付けた。
The court assigned an attendant to the minor defendant.
入院中は付添人が必要です。
An attendant is necessary during hospitalization.
付き添い is the act of attending or the person who attends in a general sense, while 付添人 is a more formal term specifically for a designated attendant, often in legal or institutional contexts.
Compound of 付き添い (tsukisoi, 'attending') + 人 (nin, 'person'). The kanji 付添人 is a standard abbreviation of 付き添い人.