In and On

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

On and in are semantically related in via topic. In some cases you can use "On" instead the word "In" as a preposition or an adverb, when it comes to topics like by, of, to.

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

In and on are semantically related in via topic. Sometimes you can use "In" instead the word "On" as a preposition or an adverb, if it concerns topics such as by, of, to.