An appointment is a scheduled meeting between two or more individuals. However, there are several other words that can be used interchangeably with this term. For instance, the word "engagement" refers to a formal meeting or agreement held between two parties. Similarly, the word "rendezvous" implies a planned meeting, often in a specific location. Moreover, the word "date" can also be used synonymously with an appointment, particularly in a personal or romantic context. Other possible synonyms for an appointment include "session," "consultation," and "interview," depending on the nature of the meeting or the individuals involved.