appointment book vs appointment calendar

appointment book and appointment calendar both are nouns.

Word	Noun	Adjective	Verb	Adverb
appointment book	Yes	No	No	No
appointment calendar	Yes	No	No	No

As nouns, appointment book and appointment calendar are synonyms defined as:

appointment book and appointment calendar: a book containing a calendar and space to keep a record of appointments

appointment book (noun)	appointment calendar (noun)
a book containing a calendar and space to keep a record of appointments	a book containing a calendar and space to keep a record of appointments