Meilleur vs. mieux

The French words 'meilleur' and 'mieux' can both translate to 'better' in English. However, they are not interchangeable and are used differently based on the context of what is being compared. This explanation will elucidate their distinct uses through various examples.

Meilleur

'Meilleur' is an adjective used to compare the quality or characteristics of nouns, indicating that one is superior to the other. It is equivalent to 'better' in a direct comparison of two things.
Ce livre est meilleur que celui-là.
(This book is better than that one.)
Elle est la meilleure élève de la classe.
(She is the best student in the class.)
J'ai un meilleur score à ce jeu.
(I have a better score in this game.)

Mieux

'Mieux' is an adverb used to compare actions or states expressed by verbs, suggesting a higher degree or manner of execution. It is equivalent to 'better' when discussing how something is done.
Il court mieux que moi.
(He runs better than I do.)
Je me sens mieux aujourd'hui.
(I feel better today.)
Elle chante mieux avec ce micro.
(She sings better with this microphone.)

Summary

In summary, 'meilleur' as an adjective compares nouns (e.g., books, students), while 'mieux', as an adverb, compares verbs (e.g., running, feeling). Knowing when to use each word correctly is vital for effective communication in French.