report vs urban legend

report and urban legend both are nouns.

Word	Noun	Adjective	Verb	Adverb
report	Yes	No	Yes	No
urban legend	Yes	No	No	No

As nouns, urban legend is a hyponym of report; that is, urban legend is a word with a more specific, narrower meaning than report:

report: a short account of the news
urban legend: a story that appears mysteriously and spreads spontaneously in various forms and is usually false; contains elements of humor or horror and is popularly believed to be true

Other hyponyms of report include newsletter, newssheet, bulletin, communique, despatch, dispatch, exclusive, scoop.

report (noun)	urban legend (noun)
the general estimation that the public has for a person	a story that appears mysteriously and spreads spontaneously in various forms and is usually false; contains elements of humor or horror and is popularly believed to be true
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)	urban legend (verb)
to give an account or representation of in words
make known to the authorities
complain about; make a charge against
announce one's presence
announce as the result of an investigation or experience or finding
be responsible for reporting the details of, as in journalism