Here are the matches for the definitions with the terms provided:
- Direct contact - contact with a pathogen by touching a contaminated object.
- Air-borne - pathogen that is spread through the air.
- Tumor - abnormal mass of tissue.
- Immune system - a network of cells, tissues, organs, and chemicals that fight off pathogens.
- Pathogens - microorganisms that cause disease.
- Insulin - a hormone that helps glucose from food enter body cells and provide them with energy.
- Communicable disease - a disease that is transmitted by another person.
- Blood-borne - pathogen that is spread through contact with an infected person's blood.
- Non-communicable disease - a disease that is not transmitted by another person.
- Indirect contact - contact with body fluids, other than blood, of an infected person.
Please adjust the wording of the last two definitions to accurately reflect these descriptions.