It is neither! 35mm is the overall width of the film. And, there are many different standards for frame sizes; the same film stock is used for still photography and motion picture photography, both are different. But, a typical 35mm frame is 16mm tall.
The space between the sprocket holes is 25.375mm, or very, very slightly under 1 inch.













Yeah who is out shopping for sweatpants, takes a pair off the rack and says “fuck yea my ass gonna say Juicy”?