Can any doc tell me what's the difference between a counseller and a psychotherapist ?

Same or different: they can be the same or be different. my guess is that professionals with less training call themselves counselors and people with more training or degrees are more likely to say they are psychotherapists. but for most laypeople its probably safe to assume they are the same or very close to it.

A counsellor can be : a Licensed Clinical Social Worker, a Marriage & Family Therapist, a Master of Education or a Board-Certified Behavioral Analyst. A psychotherapist usually has a Ph.D. or Psy.D. degree & the title of "Doctor." Therapy can be behavioral, cognitive-behavioral or educational; also, traditional psychotherapy, family-systems', specific techniques for phobias, PTSD or habits or, for kids, play therapy.

Ask AbOut Degree: "Counsellor" & "psychotherapist" R general terms. Ppl w/ varied types of education & training use these terms. When looking 4 help re: 2 psychological concerns, ask abt education & training. There R ppl w/ (1) 4-year college degrees; (2) w/ an addtl 1-2 yrs (master's degree), & (3) w/ even more yrs (doctoral degrees). Practicing psychologists have doctorates in either clinical or counseling psych.