A picture (/'pɪkʧə(r)/) or image is a [definition]
Pictures are important in TEFL. They can be used for identifying vocabulary and contextualisation.
Pictures are more important at low levels than at higher levels. And they are more important in a class where the teacher does not speak the students' L1 and where translation is difficult. They are also important in textbooks.
Pictures can be printed on paper, displayed on a screen, or drawn. For the last reason drawing is an important teaching skill.
Picture action descriptions uses the present progressive to talk about pictures.