Entrepreneurs are those persons who solve problems through innovation and take up financial risk to run their business ideas.
These are the people who takes risks, innovate and create in a business motive and try to earn profit through it.
Social entrepreneur are those person who keep their profit mindset as secondary objective and tak up the problem which exists in the society and try to eradicate it through their innovation and creativity.
These person have high level of motivation and vision to change the way the things are there in the society.
They operate to change the face of the society, they sense the problem that are faced by majority of portion in the society and try to come up with the idea through which they can solve it and remove the problem.
Example of social entrepreneur is you might have heard about Help Us Green, this organisation take up the flower left out from temples and use it to make different products. They produce incense sticks etc.