1 has different meanings. Teaching refers to the act of educating and guiding the target with some knowledge or experience in one or more ways, so that it can correctly understand or use the knowledge or experience taught. Guidance refers to instruction, guidance and guidance, guiding students to practice, and also refers to the coach of sports.

2. The usage is different. Teaching is educational guidance, but teachers use it for students and elders use it for younger generations. Everyone can get guidance.