appointment vs sundate

appointment and sundate both are nouns.

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

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

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

appointment (noun)	sundate (noun)
the act of putting a person into a non-elective position	A date on a Sunday
the job to which you are (or hope to be) appointed
(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