By and On

By adverb - At, within, or to a short distance or time.

On is a synonym for by in part of speech topic. In some cases you can use "On" instead the word "By" as an adverb or a preposition, when it comes to topics like through, toward, over, past. popular alternative

On adverb - Toward a point ahead in space or time.

By is a synonym for on in part of speech topic. You can use "By" instead the word "On" as an adverb or a preposition, if it concerns topics such as through, toward, over, via. popular alternative