给我5个英文单词，它们的中文意思类似，但有细微的区别。
1. Happy - Joyful: Both express a sense of happiness, but "Joyful" implies a stronger sense of elation.
2. Explain - Describe: Both involve conveying information, but "Explain" implies a more detailed and thorough presentation of information.
3. Brave - Courageous: Both imply fearlessness in the face of danger, but "Courageous" suggests a deeper sense of moral fortitude.
4. Confident - Self-assured: Both imply a belief in oneself, but "Self-assured" suggests a more innate sense of belief and certainty.
5. Clean - Neat: Both imply a sense of tidiness or orderliness, but "Neat" suggests a higher degree of precision and attention to detail.