After and Up on

After adjective - Being at or in the part of something opposite the front part.

Up on and after are semantically related. In some cases you can replace term "Up on" with "After", this adjectives are similar.

Up on adjective - Being up to particular standard or level especially in being up to date in knowledge.

After and up on are semantically related. Sometimes you can use "After" instead a preposition "Up on".