Term Definition Helper

Provide simple definitions for the following terms: [list of terms, e.g., 'photosynthesis, gravity, democracy']. For each term, include a short example or analogy where possible to enhance understanding. Make sure the definitions are clear and accessible for someone who may not be familiar with the terminology. The definitions will be written in [specific language, e.g., English, Spanish, French] and will be [specific length, e.g., 500 words, 1000 words]. I am a [specific age group, e.g., high school student, college student, adult learner].