picture has 37 distinct synonyms spread across 11 of its 12 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a visual representation (of an object or scene or person or abstraction) produced on a surface
“they showed us the pictures of their wedding”
graphic art consisting of an artistic composition made by applying paints to a surface
“a small painting by Picasso”
a clear and telling mental image
“he described his mental picture of his assailant”
illustrations used to decorate or explain a text
“the dictionary had many pictures”
a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement
“they went to a movie every Saturday night”
the visible part of a television transmission
“they could still receive the sound but the picture was gone”
a graphic or vivid verbal description
“too often the narrative was interrupted by long word pictures”
a typical example of some state or quality
“the very picture of a modern general”
a representation of a person or scene in the form of a print or transparent slide or in digital format
Synonyms, antonyms and the broader and narrower relations for picture come from Princeton University’s WordNet. Full sources and licences.