This is the 1429th most frequent Japanese word.
明
"明" means "bright" or "clear" in English.
In this sentence, '明' is used in '明日' (ashita) meaning 'tomorrow'. It represents the concept of 'next' or 'approaching' as part of time.
明日は晴れるでしょう。
Tomorrow will likely be sunny.
Here, '明' appears in '明るい' (akarui), describing light or brightness, showing a quality of luminosity or clarity.
その部屋は明るいです。
That room is bright.
In this sentence, '明' is part of '明らかにした' (akiraka ni shita), meaning 'to clarify', showing a sense of making something clear or evident.