Need
Part of speech: noun
Definition: Something required.
Part of speech: verb
Definition: To have an absolute requirement for. To want strongly; to feel that one must have something. To be obliged or required to.
Needs
Part of speech: adverb
Definition: Of necessity; necessarily; indispensably; often with must, and equivalent to "of need".
Part of speech: noun
Definition: A requirement for something; something needed.
Part of speech: verb
Definition: To have an absolute requirement for.