* General harm: The chemicals in the cleaning product are harmful to both humans and animals.
* Health: Smoking is harmful to your health and can lead to serious illnesses.
* Environment: Pollution from factories can be harmful to the environment and wildlife.
* Social: Spreading rumors can be harmful to someone's reputation.
* Technology: Excessive screen time can be harmful to children's development.
* Relationships: Jealousy can be harmful to a relationship.
Remember that the meaning of "harmful" depends on the context. It can refer to physical, mental, social, or environmental damage.