A question from BYO Wicked WordPress Themes

Can you tell me if this is correct? On page 101:

“taxonomy-taxonomyname-term.php, … If your taxonomy was called Cheeses and your term was Brie, then WordPress will look for taxonomy-cheese-brie.php when listing items…”

In the example Cheeses is plural and then it’s singular in the php file name. Also, would these not be case sensitive?