They can either be used together or actually have the same meaning, but after high school, their application scope is a little different! Just like right angles and 90 degrees, we think of right angles when we say 90 degrees, and 90 degrees and vertical when we say right angles!

And use, for example, the question you mentioned, or use it in the trade union. You can write {} u {} and {or} like this, which is actually the same as giving children names, nicknames and names. Nickname is or; The name is and.