joke vs funny

joke and funny both are nouns.

Word	Noun	Adjective	Verb	Adverb
joke	Yes	No	Yes	No
funny	Yes	Yes	No	No

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

joke (noun)	funny (noun)
a ludicrous or grotesque act done for fun and amusement	an account of an amusing incident (usually with a punch line)
activity characterized by good humor
a triviality not to be taken seriously
a humorous anecdote or remark intended to provoke laughter

joke (adjective)	funny (adjective)
	arousing or provoking laughter
	experiencing odd bodily sensations
	not as expected
	beyond or deviating from the usual or expected

joke (verb)	funny (verb)
act in a funny or teasing way
tell a joke; speak humorously