— Command: forward-word count

This function moves point forward count words (or backward if count is negative). “Moving one word” means moving until point crosses a word-constituent character and then encounters a word-separator character. However, this function cannot move point past the boundary of the accessible portion of the buffer, or across a field boundary (see Fields). The most common case of a field boundary is the end of the prompt in the minibuffer.

If it is possible to move count words, without being stopped prematurely by the buffer boundary or a field boundary, the value is t. Otherwise, the return value is nil and point stops at the buffer boundary or field boundary.

If inhibit-field-text-motion is non-nil, this function ignores field boundaries.

In an interactive call, count is specified by the numeric prefix argument.

— Command: backward-word count

This function is just like forward-word, except that it moves backward until encountering the front of a word, rather than forward.

In an interactive call, count is set to the numeric prefix argument.

— Variable: words-include-escapes

This variable affects the behavior of forward-word and everything that uses it. If it is non-nil, then characters in the “escape” and “character quote” syntax classes count as part of words. Otherwise, they do not.

— Variable: inhibit-field-text-motion

If this variable is non-nil, certain motion functions including forward-word, forward-sentence, and forward-paragraph ignore field boundaries.