Examples include marble , schist , and slate . Also see stone . To metamorphose is to change in appearance, character, condition, or function. In biology, a change in the form and perhaps the habits of an animal during its normal life cycle, as, in insects, the transformation of a caterpillar into a butterfly and, in amphibians, the changing of a tadpole into a frog. See Op Art , optical illusion , and tesselation .
Metamorphosis is an important technique in film animation .
Using computer programs to produce such effects is sometimes called morphing. Also see change and gradation . One of the basic tropes , along with simile , metonymy , synecdoche, irony, parody , etc., metaphor is most often confused with simile . S.H. Butcher, Aristotle's Theory of Poetry and Fine Art , 1951. Also see analogy , appropriation , content , incongruity , representation , and simulacrum .