Let me put the classic difference between Trigger Point and Tender Point defined by American Academy of Family Physicians.
Active Trigger Point is tender to palpation with a referred pain pattern that is similar to the patient’s pain complaint. This referred pain is felt not at the site of the trigger-point origin, but remote from it. The pain is often described as spreading or radiating. Referred pain is an important characteristic of a trigger point. It differentiates a trigger point from a tender point, which is associated with pain at the site of palpation only.
For complete reading please find the attached article. I have highlighted difference for you so that it would be easy.
Waiting for your views.