Arab citizens of Israel or Arab population of Israel are Israeli citizens, whose cultural and linguistic heritage or ethnic identity is Arab. The majority of the Arabs in Israel are Muslim but some are Christian or Druze. Many identify as Palestinian and commonly self-designate themselves as Palestinian citizens of Israel. The traditional vernacular of most Arab citizens, irrespective of religion, is the Palestinian dialect of Arabic. Most Arab citizens of Israel are functionally bilingual, their second language being Modern Hebrew. By religious affiliation, most are Muslim, particularly of the Sunni branch of Islam. There is a significant Arab Christian minority from various denominations as well as Druze, among other religious communities.