How can I tell the difference between scabies or bedbugs?

See below. Scabies lives in skin, is smaller and burrows into skin. Bed bugs live in sheets, bite suck blood and run, are larger. See the site below for details. Scabies ? bed bugs health.Nv.Gov/hcqc/scabies_powerpointslideshowview.Pdf.
Bedbugs are visible. Bedbugs are visible and live off the skin. Scabies are not visible and live in the skin. Bedbugs live on mattress, behind the bed on furniture. Scabies live on humans or pets.