The word(s) "nations" appears 17 time(s) in 17 verse(s) in Quran in Mohsin Khan translation.

(11) And how many a generation (past nations) have We destroyed before them, who were better in wealth, goods and outward appearance?

(12) "And if you deny, then nations before you have denied (their Messengers). And the duty of the Messenger is only to convey (the Message) plainly."

(13) And they swore by Allah their most binding oath that if a warner came to them, they would be more guided than any of the nations (before them); yet when a warner (Muhammad صلى الله عليه وسلم) came to them, it increased in them nothing but flight (from the truth)

(14) Sad. [These letters (Sad, etc.) are one of the miracles of the Qur'an, and none but Allah (Alone) knows their meanings]. By the Qur'an full of reminding (explanations and honour for the one who believes in it).

(15) O mankind! We have created you from a male and a female, and made you into nations and tribes, that you may know one another. Verily, the most honourable of you with Allah is that (believer) who has At-Taqwa [i.e. he is one of the Muttaqun (the pious. See V.2:2)]. Verily, Allah is All-Knowing, All-Aware.

(16) Are your disbelievers (O Quraish!) better than these [nations of Nuh (Noah), Lut (Lot), Salih, and the people of Fir'aun (Pharaoh) who were destroyed)? Or have you an immunity (against Our Torment) in the Divine Scriptures?

(17) (And has also sent to you) a Messenger (Muhammad صلى الله عليه وسلم), who recites to you the Verses of Allah (the Qur'an) containing clear explanations, that He may take out those who believe and do righteous good deeds, from the darkness (of polytheism and disbelief) to the light (of Islamic Monotheism). And whosoever believes in Allah and performs righteous good deeds, He will admit him into Gardens under which rivers flow (Paradise) to dwell therein forever. Allah has indeed granted for him an excellent provision.