Imamat is main difference.
Five Pillars of Islam according to shia Muslims are:
1. Monotheism: The Oneness of Allah (tawhid)
2. Divine Justice ('adl)
3. Prophethood (nubuwwa)
4. Succession to Muhammad (imamat)
5. The Day of Judgement and the Resurrection (Qiyama)
Practices of Islam according to shia Muslims:
1- Prayers (salaat) - 5 times a day
2- Fasting (sawm) during Ramadan
3-4. Alms giving (zakaat and khums)
5- Pilgrimage to the city of Makkah (hajj)
6- Holy Defense (Jihad)
7-8. Enjoining good (amr bil-ma'rouf) and forbidding evil (nahiy an al-munkar)
9- Supporting those who walk in the path of Allah (tawalli li awliyaa' Allah)
10- Turning away from the enemies of Allah (tabarri min a'daa Allah)
Five Pillars of Islam according to Sunni Muslims are:
1. professing (Shahadah)
2. Prayer (Salat)
3. Alms-giving (ZakÄt)
4. Fasting (Sawm of Ramadan)
5. Pilgrimage to Mecca (Hajj)
also different sects of sunni have differs in five pillars. for example Mu'tazilate Sunni Scholars like shia consider Adl as one pillar. but Ash'arites does not believe Adl is one of Pillars although believing in Adl as an attribute of God but with an interpret of Adl that in view of shia and Mu'tazilate is equal to not having Adl.
the Sunnis are the majority and the shiites are the minority.therefore the numbers of Sunnis are more than shiites populations.
No, Shiites outnumber Sunnis in Iraq. However, Sunnis over the world outnumber Shiites. World statistics is that Sunnis Muslim world percentage is 85% of total world Muslims. While Shiites are less than 15%. Refer to question below for more information.
No They are not Sunnis. They are Shiites.
There is no war between them Only the extremists create problem
What caused the split was Muhammad's death in 632.
The Sunnis are of bigger population. Of world Muslims, 85% are Sunnis.
Please see the two Related Questions below which discuss the differences of Sunnis with Shiites (together they represent >99% of Muslims) and for other much more minor sects like Ibadi, Ahmadi, etc.
Some Sunnis hate some Shiites and some Shiites hate some Sunnis, but the majority of the conflicts between them are not theological, but political, social, and economic. These labels work similarly to ethnic labels in the Balkans, ripping people and countries apart. It does not help that many Sunnis and Shiites purposely or unintentionally misconstrue the doctrines of the other in order to give Divine Legitimacy to what would otherwise be a vulgar brawl for resources.
661AD
Shiites and Sunnis. However, they are not splits as for example in Chritianity different denominations. Sunnis and Shiites differe in minor Islam details. Refer to question below.
Sunnis and Shiites
Both Shiites and Sunnis are right Muslims. They differ in minor issues that are not relevant to the basic Islam rules and instructions. Refer to related question below.