The term "snuff" sometimes overlaps with "snus

https://www.scribd.com/document/1017653415/Pablo-Snus-vs-Killa-Snus-Which-Option-is-Right-for-Your-Nicotine-Needs-164708

The term "snuff" sometimes overlaps with "snus," but they refer to different forms of smokeless tobacco: dip versus ground tobacco powder intended for nasal use versus oral use.