JIC is 37* fittings in the commercial/industrial type hose like on farm equipment, bulldozers/construction equip, or hydraulic systems in factories, etc
It is BIG, HEAVY and with its outter covering and thick material is good for uses where abrasion or continual bending(like on a loader/dozer) makes it very durable.
AN is 37*, fittings made from aluminum, anodized blue(part of the identification) has a higher quality/class of thread and is 40-50% stronger than JIC--- AN hose has various linings, and outer layer is braided stainless----generally used in aircraft/aeronautical and race cars where strength, lite weight, and safety are concerns(fuel,
oil, hydraulic leaks)