When a word in the document is flagged by the Spell Check, the program displays the Spell Check dialog boxSpell_dialog.tex.
If you check 20 or fewer words, the number checked is displayed in the status area at the bottom of the screen. If you check more than 20 words, a dialog box opens to give you the number of words checked and the number of replacements made.
You can use this feature to count the number of words in a document by starting the spell check at the beginning of the document. The count doesn't include mathematics or words in mathematics.