SWOT stands for strengths, weaknesses, opportunities and threats.
Strengths are the advantages the business has within it, for example you may be a very organized person who has completed an entrepreneurship course.
Weaknesses are the disadvantages the business has within it, for instance you may not be good at keeping financial records or at dealing calmly with busy, stressful situations.
Opportunities are advantages that exist in the environment in which you run your business. For example little competition.
Threats are disadvantages that exist in the environment in which you run your business. An example may be weather.