Still not sure which word to use? Choose a picture and take a look through the many choices! This graphic has excellent pictures to go with the information and I think that really help gets the point across. Anna comments: expansion of vocabulary
Are boring words hurting your writing? Some words, when repetitively used, become boring for the reader. Consider using a synonym instead, which might help convey the meaning more vividly and accurately.
An interesting 'accordion' dress concept I saw on a Chinese dress site people might be interested in (link to dress in comments) : sewing. It would be interesting to not too a bunch of colors for the accordion part, but just one.