WordNet sense 1 (a state of extreme poverty):

deprivation, neediness, privation

WordNet sense 2 (the state of needing something that is absent or unavailable):

deficiency, lack

WordNet sense 3 (anything that is necessary but lacking):

need

WordNet sense 4 (a specific feeling of desire):

wish, wishing

WordNet sense 5 (feel or have a desire for; want strongly):

desire

WordNet sense 6 (have need of):

require