What is the difference between 'ascent' and 'assent'?

An ascent is a physical climb up something, like your ascent up a rock wall at the gym. This word can also be used with reference to something less tangible, like an ascent up the corporate ladder. Ascents are for rockets and rock stars.Assent is a rather formal way to say “agree.” If your parents assent to having your best friend stay for the weekend, go ahead and get the extra bed ready. As a noun, assent refers to an agreement.