I have no idea what you are trying to say. Neither 18 or 20 are minors.
“Neither 18 or 20 are minors.”
The term “minor” can mean different things depending on which statute you are looking at. In my state for instance you have to be 21 to drink. If you are caught with alcohol before you turn 21 you get charged with “Minor in Possession of Alcohol.” The law specifically provides that for the purpose of that subsection the term “minor” refers to a person who has not yet reached the age of 21. But then of course there are plenty of other sections of our code where a minor is considered to be one who has not yet reached the age of 18.