* "Pattern" is a very broad term. Poets use many patterns, from obvious ones like rhyme and meter to more subtle patterns like imagery, symbolism, or structure.
* Words can have multiple meanings. A word like "structure" could refer to a formal structure (like a sonnet) or to the overall organization of ideas and themes in a poem.
To answer your question effectively, I need you to provide me with a list of words. Then I can tell you which one doesn't typically describe a pattern in a poem.
For example, if your list is:
* Rhythm
* Meter
* Color
* Theme
Then color would be the word that doesn't usually describe a pattern in a poem. While color can be used as imagery, it's not a pattern in the same way that rhythm, meter, or theme are.