A basic face mask (or a disposable/reusable mask) is usually made out of cloth or cotton and offers only limited protection against COVID-19. A face shield is a piece of plastic that is longer and covers a person's face and neck and offers complete protection against any liquids or droplets.
An N95 mask is an advanced mask that contains better filtration and a tighter fit. The N95 respirator edges are designed to form a protective seal around the nose and mouth of the wearer and provide a more effective filtration system against airborne particles.