General happiness:
* 开心 (kāi xīn): This is the most common and versatile way to say "happy" in Chinese. It literally means "open heart," conveying a feeling of joy and contentment.
Specific types of happiness:
* 高兴 (gāo xìng): This means "happy" or "delighted," and is often used to express joy about something specific.
* 愉快 (yú kuài): This means "pleasant" or "enjoyable," and is used to describe a happy or enjoyable experience.
* 幸福 (xìng fú): This means "happiness" or "well-being" and refers to a state of deep and enduring happiness.
Other related words:
* 快乐 (kuài lè): This means "joy" or "pleasure," and is used to describe a feeling of happiness or satisfaction.
* 满意 (mǎn yì): This means "satisfied" or "content," and can be used to express happiness with a particular outcome.
The best way to choose the right word depends on the specific situation and the level of formality you want to use.
For example, you would say "开心 (kāi xīn)" to a friend, but you would say "高兴 (gāo xìng)" to a more formal acquaintance.
It's always a good idea to ask a native speaker for help if you're unsure which word to use.