whats the difference between EMT and paramedic?

EMTs provide basic life support. They take a class that tends to range from 120-200 hours, which can span 2-4 months depending on the frequency of the class (these are averages, it can be more or less, but this is a pretty good center). They can all administer oxygen, and in some/most regions, they can administer Epi pens, aspirin, oral glucose, glucagon, and assist patients with their Nitro. They can provide CPR including AED and ventilatory adjuncts (OPAs and NPAs, and in some cases the Combitube or EOA), spinal immobilization, and splinting. They are also fully capable of taking vital signs including blood pressure, pulse, spO2, lung sounds, respiratory rate, BGL, etc.

Paramedics on the other hand, have significantly more schooling that, on average, is 1.5-2 years. In my area, many paramedics hold associate degrees or even bachelor degrees, but again, the norm is 1.5-2 years. In addition to the knowledge of an EMT, paramedics are in care of cardiac monitors and can interpret 12-lead EKGs. They form a treatment plan and can administer an extensive list of medications including Narcan, respiratory medications such as albuterol and Atrovent, antidysrhythmics such as Lidocaine, Amiodarone, Adenosine, Cardizem, medications for allergic reactions such as epinephrine and benadryl, as well as many other medications depending on their local protocols. They can perform RSI (Rapid Sequence Induction/Intubation) as well as normal intubations. They also have other airways depending on location such as LMAs or the King airway and can perform needle decompression and cricothyrotomy. They can perform interventions such as syncronized cardioversion, defibrillation, and transcutaneous pacing. And of course they can start IVs (through which the majority of medications are given), and can also do IOs (where a needle is drilled into the tibia or humerus) but can also give medications intranasally, IM, PO, ETT, and SQ.

Actual pay rates would depend on where you live, but paramedics are paid more.