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

(371) Or has He (Allah) only daughters and you have sons?

(372) That no burdened person (with sins) shall bear the burden (sins) of another.

(373) Whose supply is not cut off (by change of season), nor are they out of reach,

(374) Then why do you not (intervene) when (the soul of a dying person) reaches the throat?

(375) Then, if he (the dying person) be of the Muqarrabun (those brought near to Allah),

(376) And if he (the dying person) be of those on the Right Hand,

(377) But if he (the dying person) be of the denying (of the Resurrection), the erring (away from the Right Path of Islamic Monotheism),

(378) It is He Who sends down manifest Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) to His slave (Muhammad صلى الله عليه وسلم) that He may bring you out from darkness into light. And verily, Allah is to you full of kindness, Most Merciful.

(379) Know that Allah gives life to the earth after its death! Indeed We have made clear the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) to you, if you but understand.

(380) And those who believe in (the Oneness of) Allah and His Messengers - they are the Siddiqun (i.e. those followers of the Prophets who were first and foremost to believe in them), and the martyrs with their Lord, they shall have their reward and their light. But those who disbelieve (in the Oneness of Allah - Islamic Monotheism) and deny Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) - they shall be the dwellers of the blazing Fire.