Juxtaposition (Analogies)

Metaphor is the expression of an understanding of one concept in terms of another concept, where there is some similarity or correlation between the two. Unlike simile, metaphor not using the term like/ as.
For example : Your insincere apology just added fuel to the fire.

Simile is comparison of 2 unlike things using 'like' or 'as'.
For example : As white as snow

Some advertisement that show analogy:sources : http://www.toxel.com/inspiration/2008/06/12/14-creative-advertisements-part-3/