Wants and Needs

Verb to wish for something
want
For my vacation I want to go diving in Hawaii.
Verb to wish for something
want
I want to have some cookies with my coffee.
Verb to wish for something
want
I can help you to study for the test, if you want.
Verb to require something
need
My houseplants need a lot of sunlight.
Verb used to say that some action is necessary
needs to
My dentist says that my bad tooth needs to be removed.
Phrase used to say that someone or something needs to have something
are you in need of
Excuse us, are you in need of assistance? Let us help you cross the street.
Phrase if something becomes necessary
if need be
My friend might not be able to drive us back from the concert. If need be we can take the bus home.
Phrase used to say that something is not necessary
there's no need
There's no need for you to shout. I can hear you just fine!