The word(s) "apart" appears 4 time(s) in 4 verse(s) in Quran in Mohsin Khan translation.

(1) So it (the ship) sailed with them amidst waves like mountains, and Nuh (Noah) called out to his son, who had separated himself (apart): "O my son! Embark with us and be not with the disbelievers."

(2) There is no restriction on the blind, nor any restriction on the lame, nor any restriction on the sick, nor on yourselves, if you eat from your houses, or the houses of your fathers, or the houses of your mothers, or the houses of your brothers, or the houses of your sisters, or the houses of your father's brothers, or the houses of your father's sisters, or the houses of your mother's brothers, or the houses of your mother's sisters, or (from that) whereof you hold keys, or (from the house) of a friend. No sin on you whether you eat together or apart. But when you enter the houses, greet one another with a greeting from Allah (i.e. say: السلام عليكم) As-Salamu 'Alaikum - peace be on you) blessed and good. Thus Allah makes clear the Ayat (these Verses or your religious symbols and signs) to you that you may understand.

(3) (It will be said): "And O you Mujrimun (criminals, polytheists, sinners, disbelievers in the Islamic Monotheism, wicked evil ones)! Get you apart this Day (from the believers).

(4) They are the ones who disbelieved (in the Oneness of Allah - Islamic Monotheism) and hindered you from Al-Masjid-al-Haram (at Makkah) and detained the sacrificial animals from reaching their place of sacrifice. Had there not been believing men and believing women whom you did not know, that you may kill them and on whose account a sin would have been committed by you without (your) knowledge, that Allah might bring into His Mercy whom He wills - if they (the believers and the disbelievers) had been apart, We verily would have punished those of them who disbelieved with painful torment.