I'm trying to learn the nuance between <b>ENGAGE</b> and <b>ENGROSS</b><br/><h2>A. Never answering cellphone in my car, I'm always fully engaged/engrossed whenever I'm driving. </h2><h2>B. I am completely engaged/engrossed in this project.</h2>I feel both words are valid, but I can't tell if there's any minuscule difference in their meanings. Is there any?