"Function statement turned into function expression." Doesn't he mean Function *declaration* into function expression?

So I took the advice of the video and checked out the teacher's notes to better understand the difference between a function statement and a function expression. However the link for "function statement" took me to "function declaration" on MDN. From what I understand, a "function statement" is nothing more than the body of a function - the code between the {} brackets. On the other hand, a function declaration is, well, what we have been using since we first learned functions in the beginning JavaScript courses.

So did I miss something, or did the teacher misspeak? Because it looks like in the video he actually turned a function declaration into a function expression, not a function statement into a function expression like he said.

Of course, to me, the example he was describing didn't look quite like any of the three exactly, but I chalked that up to my own limited experience and based my assumption on what looked closest to a declaration/expression based on what I know and what I just read.

Thank you in advance.