How do i find what's the difference between hodgkin's disease and non-hodgkins lymphoma?

Cells: Different cell lineages. They are all lymphomas - derived from lymphocytes, but hl and nhl are from different variants of these cells. Both diseases tend to spread through lymph nodes, but the treatments are different (ie different chemo regimen) and they tend to occur at different ages in patients. Not enough room here to go into that much depth of discussion.