This is the 386th most frequent French word.
bons
"Goods" or "coupons/vouchers" (depending on context).
In this sentence, 'bons' is the plural masculine form of the adjective 'bon', agreeing with the plural masculine 'fruits'.
Ces fruits sont très bons.
These fruits are very good.
Here, 'bons' describes the plural masculine noun 'livres', meaning that the books are of good quality or worth reading.
J'ai deux bons livres à te recommander.
I have two good books to recommend to you.
In this sentence, 'bons' modifies the masculine plural noun 'moments', and expresses the quality of the times experienced.