idiotic vs nonsensical

idiotic and nonsensical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
idiotic	No	Yes	No	No
nonsensical	No	Yes	No	No

As adjectives, idiotic and nonsensical are synonyms defined as:

Other synonyms of idiotic include absurd, cockeyed, derisory, laughable, ludicrous, preposterous, ridiculous.

idiotic (adjective)	nonsensical (adjective)
so unreasonable as to invite derision	so unreasonable as to invite derision
insanely irresponsible	having no intelligible meaning
having a mental age of three to seven years