Hence and Hereafter

Hence adverb - For this or that reason.

Hereafter is a synonym for hence in in the future topic. In some cases you can use "Hereafter" instead the word "Hence" as an adverb or an adjective.

Hereafter adverb - From this point on.

Hence is a synonym for hereafter in from now on topic. You can use "Hence" instead the word "Hereafter" as an adverb or an adjective, if it concerns topics such as in the future, in future.