A fountain pen is a nib pen that feeds ink the to nib via gravity and a capillary action that allows for smooth writing. They can store ink in the pens body or in an ink cartridge or converter which...
No, fountain pens are not gel pens. Gel pens are really a variation on Ballpoints and Roller ball Pens. Fountain pens retain the same nib and when they run out of ink you add more.