All inner resistance is experienced as negativity in one form or another. All negativity is resistance. In this context, the two words are almost synonymous. Negativity ranges from irritation or impatience to fierce anger, from a depressed mood or sullen resentment to suicidal despair. Sometimes the resistance triggers the emotional pain body
Eckhart Tolle (2010). “The Power of Now: A Guide to Spiritual Enlightenment”, p.188, New World Library