funny vs laughable

funny is a noun but laughable is not a noun.

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

As adjectives, funny and laughable are synonyms defined as:

Other synonyms of funny include amusing, comic, comical, mirthful, risible.

funny (noun)	laughable (noun)
an account of an amusing incident (usually with a punch line)

funny (adjective)	laughable (adjective)
arousing or provoking laughter	so unreasonable as to invite derision
experiencing odd bodily sensations	arousing or provoking laughter
not as expected
beyond or deviating from the usual or expected