lack vs want

lack and want both are nouns.

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

As nouns, lack and want are synonyms defined as:

lack and want: the state of needing something that is absent or unavailable

Other synonyms of lack include deficiency.

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

Other hyponyms of lack include exclude, lack.

lack (noun)	want (noun)
the state of needing something that is absent or unavailable	a specific feeling of desire
	anything that is necessary but lacking
	a state of extreme poverty
	the state of needing something that is absent or unavailable

lack (verb)	want (verb)
be without	wish or demand the presence of
To be insufficiently prepared	have need of
	hunt or look for; want for a particular reason
	feel or have a desire for; want strongly
	be without, lack; be deficient in