appointment vs tryst

appointment and tryst both are nouns.

Word	Noun	Adjective	Verb	Adverb
appointment	Yes	No	No	No
tryst	Yes	No	No	No

As nouns, tryst is a hyponym of appointment; that is, tryst is a word with a more specific, narrower meaning than appointment:

Other hyponyms of appointment include blind date, double date, rendezvous, sundate.

appointment (noun)	tryst (noun)
the act of putting a person into a non-elective position	a secret rendezvous (especially between lovers)
the job to which you are (or hope to be) appointed	a date; usually with a member of the opposite sex
(law) the act of disposing of property by virtue of the power of appointment
(usually in the plural) furnishings and equipment (especially for a ship or hotel)
a meeting arranged in advance
a person who is appointed to a job or position