Difference between Need and Want and how to use them in sentences. *Need* Something you must have to live or stay safe. *I need water to drink* *You need sleep to feel good* *We need clothes to wear* *They need money to buy food* *She needs help with homework* *Want* Something you like to have, but it’s not important to live. *I want a chocolate* *He wants to play a game* *We want to go outside* *She wants a new dress* *They want a big car*