pills
... that the little balls of fibers that appear on clothing due to wear are called pills?
... that the little balls of <a href="./Fiber" id="mwC4Q" rel="mw:WikiLink" title="Fiber">fibers</a> that appear on <a href="./Clothing" id="mwC4U" rel="mw:WikiLink" title="Clothing">clothing</a> due to wear are called <b id="mwC4Y"><a href="./Pill_(textile)" id="mwC4c" rel="mw:WikiLink" title="Pill (textile)">pills</a></b>?