need vs want

need and want both are nouns.

Word	Noun	Adjective	Verb	Adverb
need	Yes	No	Yes	No
want	Yes	No	Yes	No

As nouns, need and want are synonyms defined as:

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

Other hyponyms of need include deficiency, lack, necessity.

As verbs, need and want are synonyms defined as:

Other synonyms of need include require.

need (noun)	want (noun)
the psychological feature that arouses an organism to action toward a desired goal; the reason for the action; that which gives purpose and direction to behavior	a specific feeling of desire
anything that is necessary but lacking	anything that is necessary but lacking
a condition requiring relief	a state of extreme poverty
a state of extreme poverty or destitution	the state of needing something that is absent or unavailable

need (verb)	want (verb)
have need of	wish or demand the presence of
have or feel a need for	have need of
require as useful, just, or proper	hunt or look for; want for a particular reason
	feel or have a desire for; want strongly
	be without, lack; be deficient in