Languages › French What's the Difference Between Bon vs Bien? Share Flipboard Email Print Tim Robberts/Taxi/Getty Images French Vocabulary Pronunciation & Conversation Grammar Resources For Teachers By ThoughtCo Updated March 06, 2017 The French words bon and bien, mauvais and mal are often mixed up. This is because the two pairs have similar meanings: bon and bien are positive while mauvais and mal are negative. In addition all four of these words can be adjectives, adverbs, or nouns. Bon and mauvais are usually adjectives, while bien and mal are usually adverbs. The following table summarizes the differences between each pair; click the links below for more information. adjective good well bad wrong adverb nice well bad badly noun form good(s) bad part evil Correctly Use the Confusing French Pairs Bon vs. Bien French Idiomatic Expressions with 'Mal' Mauvais vs. Mal Meilleur vs. Mieux Fun French Expressions With 'Bien' Why Spanish Isn't Easier to Learn Than French French Idiomatic Expressions With 'Bon' When to Use 'À' vs. 'De' in French Learn to Use the French Word 'Tout' and Its Variations French Comparative and Superlative Adverbs Personal Pronouns: French Grammar and Pronunciation Glossary French Superlative Adverbs - Adverbes Superlatifs French Adverbs: Encore vs. Toujours Understanding and Using French Adjectives (Adjectifs) Confusing French Pairs Tant vs Autant How to Distinguish Between the French Expressions 'C'est' vs. 'Il Est'