What to write in a discussion?

Again, taken from R. A. Day's book.

Components of the Discussion:
1. Try to present the principles, relationships, and generalizations showed by the Results. And bear in mind, in a good Discussion, you discuss; do not recapitulate the Results.
2. Point out any exceptions or any lack of correlation, and define unsettled points.
3. Show how your results and interpretations agree (or contrast) with previously published work.
4. Don't be shy; discuss the theoretical implications of your work, as well as any possible practical applications.
5. State your conclusion, as clearly as possible.
6. Summarize your evidence for each conclusion.

Show the relationship between observed facts.

Significance of the work must be stated.