1) Both freedom of speech and expression and freedom to assemble in peaceful manner belong to right to freedom guaranteed by the Constitution.
2) Freedom of speech suggested that our ideas and personality develop only when we are able to communicate freely with others. With this freedom one has the freedom to criticize the government or the activities of the association in your conversations, and may also publicise your views through magazines, newspapers etc
3) Citizens can also assemble in public places to hold meetings, processions, rallies, etc on any issue. The only thing that has to be kept in mind is that the meetings are conducted peacefully
4) The similarity between these two freedom or rights are that they allow the citizens to express their views, opinions, speech etc freely and without any fear