idealization vs idea

idealization and idea both are nouns.

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

As nouns, idea is a hypernym of idealization; that is, idea is a word with a broader meaning than idealization:

Other hypernyms of idealization include thought.

idealization (noun)	idea (noun)
a portrayal of something as ideal	the content of cognition; the main thing you are thinking about
something that exists only as an idea	your intention; what you intend to do
(psychiatry) a defense mechanism that splits something you are ambivalent about into two representations--one good and one bad	an approximate calculation of quantity or degree or worth
	a personal view
	(music) melodic subject of a musical composition