What is a want and need compared to a desire?

i want money, need air,but you i desire

for you are the one i want to acquire

the one i want to see after work when im tired

for he doesn't have money , power or business attire

yet he is the one i definitely admire

a black suite and a chiseled jaw is what i want

a man who loves me unconditionally is what i need

but a man who's mind matches with my mind in a soul to soul connection that i cannot live without because we are joined to the hips is what i DESIRE!