Highest and Most

Highest adjective - Being at a point or level higher than all others.

Most is a synonym for highest in topmost topic. In some cases you can use "Most" instead the word "Highest" as an adjective or a noun.

Most adjective - Of the greatest or highest degree or quantity.

Highest is a synonym for most in best topic. You can use "Highest" instead the word "Most" as an adjective or a noun, if it concerns topics such as ultimate.

Nearby Word: mostly