Number vs Numeral

Dan wrote to us at syntaxsisters@yahoo.com to ask about the difference between the words
"number" and "numeral." I checked a few dictionaries which confirmed my suspicions about these two words.

Number refers to the concept of a number. For instance, when we say there are five ducks, we can picture five little birds in a row.

Numeral refers to the markings we use to indicate that idea of "fiveness", such as "5", "V", or even "five."

So, if I wanted to say how many ducks there are, I would say "The number of ducks is five." If I wanted to tell someone what to write down, I would say "Use the numeral for five."

Or, for instance, if your house is number 182, then your house number contains the numerals "1", "8", and "2."

Does that help?
Any brilliant insights, sis?