The word(s) "lessons" appears 150 time(s) in 149 verse(s) in Quran in Mohsin Khan translation.

(91) We helped him against the people who denied Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.). Verily, they were a people given to evil. So We drowned them all.

(92) But those who strive against Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), to frustrate them, they will be dwellers of the Hell-fire.

(93) Verily, in this [what We did as regards drowning of the people of Nuh (Noah)], there are indeed Ayat (proofs, evidence, lessons, signs, etc. for men to understand), for sure We are ever putting (men) to the test.

(94) Then We sent Musa (Moses) and his brother Harun‎‎ (Aaron), with Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) and manifest authority,

(95) And those who believe in the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of their Lord;

(96) (This is) a Surah (chapter of the Qur'an) which We have sent down and which We have enjoined, (ordained its laws); and in it We have revealed manifest Ayat (proofs, evidence, verses, lessons, signs, revelations - lawful and unlawful things, and set boundaries of Islamic Religion), that you may remember.

(97) And Allah makes the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) plain to you, and Allah is All-Knowing, All-Wise.

(98) And indeed We have sent down for you Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) that make things plain, and the example of those who passed away before you, and an admonition for those who are Al-Muttaqun (the pious - See V.2:2).

(99) We have indeed sent down (in this Qur'an) manifest Ayat (proofs, evidence, verses, lessons, signs, revelations, lawful and unlawful things, and the set boundaries of Islamic religion, etc. that make things clear showing the Right Path of Allah). And Allah guides whom He wills to the Straight Path (i.e. to Allah's religion of Islamic Monotheism).

(100) And We said: "Go you both to the people who have denied Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.)." Then We destroyed them with utter destruction.