<human>: How can I tell the difference between a syringe and a hypodermic needle?
<bot>: A syringe is typically made of glass or plastic, while a hypodermic needle is usually made of stainless steel. Syringes are used to inject fluids into the body, such as medication, vaccines, or blood samples, while hypodermic needles are used for blood draws and injections. Additionally, syringes have a plunger which helps move fluid inside the barrel, whereas hypodermic needles do not.