Assent Vs. Ascent

These two words sound exactly same. However, they are completely different in terms of their meaning.

Assent: The word assent is verb as well as noun. It means agreeing to someone or something. 

Example: Assenting to higher authorities, John did exactly what he was asked to do.

Ascent: Ascent means moving or climbing up. This word is also used as noun, where it means an act of moving or climbing up.

Example: 5000 mountain climbers have attempted ascent of Mount Everest last year.