report vs announce

report is a noun but announce is not a noun.

Word	Noun	Adjective	Verb	Adverb
report	Yes	No	Yes	No
announce	No	No	Yes	No

As verbs, announce is a hypernym of report; that is, announce is a word with a broader meaning than report:

Other hypernyms of report include denote.

As verbs, announce is a hypernym of report; that is, announce is a word with a broader meaning than report:

Other hypernyms of report include denote.

report (noun)	announce (noun)
the general estimation that the public has for a person
a short account of the news
the act of informing by verbal report
an essay (especially one written as an assignment)
a written document describing the findings of some individual or group
a written evaluation of a student's scholarship and deportment
a sharp explosive sound (especially the sound of a gun firing)

report (verb)	announce (verb)
to give an account or representation of in words	make known; make an announcement
make known to the authorities	foreshadow or presage
complain about; make a charge against	announce publicly or officially
announce one's presence	give the names of
announce as the result of an investigation or experience or finding
be responsible for reporting the details of, as in journalism