Regular Expressions - Match Characters that Occur One or More Times

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1

I find this really confusing and hoping for some clarity:

For example, /a+/g would find one match in abc and return ["a"]. Because of the +, it would also find a single match in aabc and return ["aa"].

What does this mean by single match? It seems to me that this second example returns a double match, correct?

Summary 
let difficultSpelling = "Mississippi";
let myRegex = /change/; // Change this line
let result = difficultSpelling.match(myRegex);

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Challenge: Regular Expressions - Match Characters that Occur One or More Times

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2

a match is anything (no matter how long) that matches the rule

so /a+/g
would find 2 matches for example in
aa aa