juxtaposition

Short definition from Wiktionary

Noun

1. 1
   The nearness of objects with little or no delimiter.
2. 2
   The nearness of objects with little or no delimiter: An absence of linking elements in a group of words that are listed together.
3. 3
   The nearness of objects with little or no delimiter: An absence of operators in an expression.
4. 4
   The extra emphasis given to a comparison when the contrasted objects are close together.
5. 5
   The extra emphasis given to a comparison when the contrasted objects are close together: Two or more contrasting sounds, colours, styles etc. placed together for stylistic effect.
6. 6
   The extra emphasis given to a comparison when the contrasted objects are close together: The close placement of two ideas to imply a link that may not exist.

Verb

1. 1
   To place in juxtaposition.