Hi, I am willing to study something like social work to help people in Canada as internaitonal student (or probably Australia) . But I am not sure what major will be suitable and where I want to study. So, I need your help which course will be ok for me and what subjets they are.

There are some major that called Social work, Community (welfare) work, human services or social science, and counselling etc etc !! There are a lot of different names on at each different universities but like Social work is almost categolised as it is.

Different major I dont know is Social science and sociology which is more broadly field to know gender, culture and so on to focus on research about particular topics.

What are they career opportunities ?

Can anyone describe those differences for me and I also need help which major is suitable for me.
I want to help refugees, care and protect parents, women, and young children, (like orphan places), I want to work as charity organisation too like NGO or UNICEF.

Please I need your help now!