Clear up and Lit up

Clear up verb - To make plain or understandable.

Lit up and clear up are semantically related In some cases you can replace term "Lit up" with "Clear up", this phrasal verbs are similar.

Lit up adjective - Being under the influence of alcohol.

Clear up and lit up are semantically related in make shine or glow topic. Sometimes you can use "Clear up" instead a verb "Lit up".