intent vs idea

intent and idea both are nouns.

Word	Noun	Adjective	Verb	Adverb
intent	Yes	Yes	No	No
idea	Yes	No	No	No

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

intent: an anticipated outcome that is intended or that guides your planned actions
idea: your intention; what you intend to do

Other hyponyms of intent include mind, cross-purpose, final cause, sake, view, will.

intent (noun)	idea (noun)
an anticipated outcome that is intended or that guides your planned actions	the content of cognition; the main thing you are thinking about
the intended meaning of a communication	your intention; what you intend to do
	an approximate calculation of quantity or degree or worth
	a personal view
	(music) melodic subject of a musical composition

intent (adjective)	idea (adjective)
giving or marked by complete attention to