need (if you need something, it is necessary or very important for you to have it): We need food and medicines.
require formal (need): Success usually requires hard work.
want informal (need): These flowers want watering daily.
call for (require something as necessary or appropriate): The job calls for computer skills.
demand formal (require as useful or necessary): Teaching demands a lot of patience.
cry out for (to clearly need a particular thing very much): The situation in the area cries out for action.
desperate for (need something very much): They were desperate for food.
