Please rephrase - the question is unclear.
A very brief answer to a very complex question - There is 'western' opera and there is 'Eastern' [Chinese] opera. The differences between East and West opera? Chinese opera is uniquely different from Western opera because there are so many details such as origins, storylines, costumes, facial painting, stage rituals, customs, character types etc. And the 'music', well you must listen because it is impossible to describe except to say it is totally unlike 'Western' opera music and the singing is just as different - factually it is an acquired taste. 'Western' opera is such as Mozart, Wagner, Beethoven, Verdi etc.
No, opera is considered classical music.
The different parts of a soap opera are simply called episodes in the same way that another show would. The difference between a soap opera and other shows is that they air every day and do not have separate seasons.
If you mean 'western opera' -v- 'Chinese opera' the answer is they are totally different in every way. The stories and acting is not related at all and the music is completely different - written, notated and played differently - even different instruments. The links below will give a good start on understanding.
what are the basic parts of an opera
A film or other theatrical work about the American West - a western movie or television series that is extremely clichéd or formulaic, in the manner of a soap opera.
Monteverdi's Orfeo
Traditionally, no. Nabucco is an opera, and different parts are sung and acted by different characters, including groups as in the "Chorus of the Hebrew slaves," but certainly a choir could sing all of the parts if they so wished.
A western movie
Horse Opera
the Chinese use masks for the opera because there was a lot of different moods for the opera and all the colours mean different things
There are thousands of different operas.