The word(s) "son" appears 442 time(s) in 403 verse(s) in Quran in Mohsin Khan translation.

(281) And there were in the city nine men (from the sons of their chiefs), who made mischief in the land, and would not reform.

(282) These are their houses in utter ruin, for they did wrong. Verily, in this is indeed an Ayah (a lesson or a sign) for people who know.

(283) Nor can you lead the blind out of their error. You can only make to hear those who believe in Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), and who have submitted (themselves to Allah in Islam as Muslims).

(284) And (remember) the Day when We shall gather out of every nation a troop of those who denied Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), and (then) they (all) shall be driven (to the place of reckoning),

(285) Till, when they come (before their Lord at the place of reckoning), He will say: "Did you deny My Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) whereas you comprehended them not by knowledge (of their truth or falsehood), or what (else) was it that you used to do?"

(286) See they not that We have made the night for them to rest therein, and the day sight-giving? Verily, in this are Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) for the people who believe.

(287) Verily, Fir'aun (Pharaoh) exalted himself in the land and made its people sects, weakening (oppressing) a group (i.e. Children of Israel) among them: killing their sons, and letting their females live. Verily, he was of the Mufsidun (i.e. those who commit great sins and crimes, oppressors, tyrants).

(288) And the wife of Fir'aun (Pharaoh) said: "A comfort of the eye for me and for you. Kill him not, perhaps he may be of benefit to us, or we may adopt him as a son." And they perceived not (the result of that).

(289) And the heart of the mother of Musa (Moses) became empty [from every thought, except the thought of Musa (Moses)]. She was very near to disclose his (case, i.e. the child is her son), had We not strengthened her heart (with Faith), so that she might remain as one of the believers.

(290) Allah said: "We will strengthen your arm through your brother, and give you both power, so they shall not be able to harm you: with Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), you two as well as those who follow you will be the victors."