n.a figure of speech that expresses a resemblance between things of different kinds (usually formed with `like' or `as')

Similes on the Internet have explanations
Images and models, similes and metaphors.
The Role of Similarity in Similes and Metaphors
Conventionalized "as"-similes in English: a problem case
Experts' personal metaphors and similes about language learning strategies
Metaphor and Thought: The role of similarity in similes and metaphors
Aptness predicts preference for metaphors or similes, as well as recall bias
Reversibility, Aptness, and the Conventionality of Metaphors and Similes
Aptness is more important than comprehensibility in preference for metaphors and similes
An Ironic Fist in a Velvet Glove: Creative Mis-Representation in the Construction of Ironic Similes