A simile is a figure of speech in which the subject is compared to another subject. Frequently, similes are marked by use of the words like or as or so. "The snow was like a blanket". However, "The snow blanketed the earth" is also a simile and not a metaphor because the verb blanketed is a shortened form of the phrase covered like a blanket. A few other examples are "The deer ran like the wind", "The raindrops sounded as popcorn kernels popping", and "the lullaby was like the hush of the winter."
The phrase "The snow was a blanket over the earth" is the metaphor in this case. Metaphors differ from similes in that the two objects are not compared, but treated as identical, "We are but a moment's sunlight, fading in the grass." Note: Some would argue that a simile is actually a specific type of metaphor. See Joseph Kelly's The Seagull Reader (2005), pages 377-379.
See also tertium comparationis.
Simile is an Italian musical term meaning "similarly"; it indicates that the performer should continue to apply the preceding directive, whatever it was. For example, a series of dynamic changes to be repeated in many measures would make the music crowded and harder to read if written out in full, so the engraver might insert a simile directive after the first measure of the changes. The performer would then know to continue the dynamic pattern in the following measures.
Cymhariaeth | Vergleich (Literatur) | Komparo | Comparación | Comparaison | דימוי | Simile