This is the 6390th most frequent Japanese word.
シワ
Wrinkle.
In this context, 'シワ' describes folds or creases appearing in fabric.
この布にはシワがつきやすいです。
This fabric wrinkles easily.
Here, 'シワ' refers to wrinkles, typically on the skin, indicating aging or expression.
シワが増えるのが心配です。
I am worried that wrinkles will increase.
'シワ' is metaphorically used here to signify imperfections or shortcomings.